More robustification

coconut/_pyparsing.py

@@ -95,7 +95,10 @@
 
 if CPYPARSING:
     min_ver = min_versions["cPyparsing"]  # inclusive
-    max_ver = get_next_version(min_versions["cPyparsing"], point_to_increment=len(max_versions["cPyparsing"]) - 1)  # exclusive
+    max_ver = get_next_version(
+        min_versions["cPyparsing"],
+        point_to_increment=len(max_versions["cPyparsing"]) - 1,
+    )  # exclusive
 else:
     min_ver = min_versions["pyparsing"]  # inclusive
     max_ver = get_next_version(min_versions["pyparsing"])  # exclusive

coconut/compiler/util.py

@@ -889,7 +889,7 @@ def pickle_cache(original, cache_path, include_incremental=True, protocol=pickle
         with univ_open(cache_path, "wb") as pickle_file:
             pickle.dump(pickle_info_obj, pickle_file, protocol=protocol)
     except Exception:
-        logger.log_exc()
+        logger.warn_exc()
         return False
     else:
         return True

coconut/requirements.py

@@ -130,7 +130,10 @@ def get_req_str(req):
             max_ver = get_next_version(min_versions[req])
         if None in max_ver:
             assert all(v is None for v in max_ver), "invalid max version " + repr(max_ver)
-            max_ver = get_next_version(min_versions[req], point_to_increment=len(max_ver) - 1)
+            max_ver = get_next_version(
+                min_versions[req],
+                point_to_increment=len(max_ver) - 1,
+            )
         req_str += ",<" + ver_tuple_to_str(max_ver)
     return req_str
 

coconut/terminal.py

@@ -417,7 +417,7 @@ def warn_err(self, warning, force=False):
             try:
                 raise warning
             except Exception:
-                self.print_exc(warning=True)
+                self.warn_exc()
 
     def log_warn(self, *args, **kwargs):
         """Log a warning."""
@@ -428,6 +428,10 @@ def print_exc(self, err=None, show_tb=None, warning=False):
         """Properly prints an exception."""
         self.print_formatted_error(self.get_error(err, show_tb), warning)
 
+    def warn_exc(self, err=None):
+        """Warn about the current or given exception."""
+        self.print_exc(err, warning=True)
+
     def print_exception(self, err_type, err_value, err_tb):
         """Properly prints the given exception details."""
         self.print_formatted_error(format_error(err_value, err_type, err_tb))