Traceback (most recent call last): File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 246, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3644) File "real_mpfi.pyx", line 632, in sage.rings.real_mpfi.RealIntervalField_class._coerce_c_impl (sage/rings/real_mpfi.c:4819) File "parent_old.pyx", line 229, in sage.structure.parent_old.Parent._coerce_ (sage/structure/parent_old.c:3362) File "parent.pyx", line 1087, in sage.structure.parent.Parent.coerce (sage/structure/parent.c:7829) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_mpfr.pyx", line 502, in sage.rings.real_mpfr.RealField_class._coerce_map_from_ (sage/rings/real_mpfr.c:5696) File "parent.pyx", line 1933, in sage.structure.parent.Parent._coerce_map_via (sage/structure/parent.c:12142) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "real_lazy.pyx", line 114, in sage.rings.real_lazy.LazyField._coerce_map_from_ (sage/rings/real_lazy.c:3122) File "parent.pyx", line 1937, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12361) File "parent.pyx", line 1959, in sage.structure.parent.Parent.has_coerce_map_from (sage/structure/parent.c:12321) File "parent.pyx", line 2013, in sage.structure.parent.Parent.coerce_map_from (sage/structure/parent.c:12824) File "parent.pyx", line 2064, in sage.structure.parent.Parent.discover_coerce_map_from (sage/structure/parent.c:13220) File "parent_old.pyx", line 503, in sage.structure.parent_old.Parent._coerce_map_from_ (sage/structure/parent_old.c:6076) File "parent_old.pyx", line 137, in sage.structure.parent_old.Parent.coerce_map_from_c (sage/structure/parent_old.c:1888) File "parent_old.pyx", line 186, in sage.structure.parent_old.Parent.coerce_map_from_c_impl (sage/structure/parent_old.c:2599) File "parent_old.pyx", line 329, in sage.structure.parent_old.Parent.has_coerce_map_from_c (sage/structure/parent_old.c:4583) File "parent_old.pyx", line 342, in sage.structure.parent_old.Parent.has_coerce_map_from_c_impl (sage/structure/parent_old.c:4810) File "parent_old.pyx", line 238, in sage.structure.parent_old.Parent._coerce_c (sage/structure/parent_old.c:3519) File "/home/rishi/Work/sage/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/lib/python2.6/site-packages/sage/combinat/partition.py", line 2289, in parent return Partitions(sum(self[:])) File "/home/rishi/Work/sage/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/lib/python2.6/site-packages/sage/combinat/partition.py", line 3270, in Partitions return Partitions_n(n) File "/home/rishi/Work/sage/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/lib/python2.6/site-packages/sage/misc/classcall_metaclass.py", line 278, in __call__ return type.__call__(cls, *args, **options) RuntimeError: maximum recursion depth exceeded while calling a Python object