0           0 RESUME                   0

  1           2 LOAD_CONST               0 (<code object do_work at 0x7f8c503e6f70, file "repro.py", line 1>)
              4 MAKE_FUNCTION            0
              6 STORE_NAME               0 (do_work)

  6           8 NOP

  7          10 PUSH_NULL
             12 LOAD_NAME                0 (do_work)
             14 PRECALL                  0
             18 CALL                     0
             28 GET_ITER
        >>   30 FOR_ITER                 9 (to 50)
             32 STORE_NAME               1 (_)

  8          34 LOAD_CONST               1 (True)
             36 LOAD_CONST               2 (False)
             38 IS_OP                    0
             40 POP_JUMP_FORWARD_IF_FALSE     3 (to 48)

  9          42 POP_TOP
             44 LOAD_CONST               3 (None)
             46 RETURN_VALUE

  8     >>   48 JUMP_BACKWARD           10 (to 30)

  7     >>   50 LOAD_CONST               3 (None)
             52 RETURN_VALUE
        >>   54 PUSH_EXC_INFO

 10          56 LOAD_NAME                2 (NameError)
             58 CHECK_EXC_MATCH
             60 POP_JUMP_FORWARD_IF_FALSE     4 (to 70)
             62 POP_TOP

 11          64 POP_EXCEPT
             66 LOAD_CONST               3 (None)
             68 RETURN_VALUE

 10     >>   70 RERAISE                  0
        >>   72 COPY                     3
             74 POP_EXCEPT
             76 RERAISE                  1
ExceptionTable:
  10 to 42 -> 54 [0]
  48 to 48 -> 54 [0]
  54 to 62 -> 72 [1] lasti
  70 to 70 -> 72 [1] lasti

Disassembly of <code object do_work at 0x7f8c503e6f70, file "repro.py", line 1>:
  1           0 RETURN_GENERATOR
              2 POP_TOP
              4 RESUME                   0

  2           6 LOAD_CONST               0 (None)
              8 YIELD_VALUE
             10 RESUME                   1
             12 POP_TOP

  3          14 LOAD_GLOBAL              0 (x)
             26 POP_TOP
             28 LOAD_CONST               0 (None)
             30 RETURN_VALUE