bltin_exc[]: EnvironmentError is not a "leaf exception", so set it's leaf_exc flag to zero otherwise the name leaks memory.
bltin_exc[]: EnvironmentError is not a "leaf exception", so set it's
leaf_exc flag to zero otherwise the name leaks memory.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator