[issue25390] Can't define a typing.Union containing a typing.re.Pattern

Changes by Martí Congost Tapias : -- components: +Library (Lib) -Interpreter Core ___ Python tracker <http://bugs.python.org/issue25390> ___ ___ Python-bugs-list m

[issue25390] Can't define a typing.Union containing a typing.re.Pattern

New submission from Martí Congost Tapias: Defining a union of typing.re.Pattern and anything that isn't AnyStr raises a TypeError exception. Example: from typing import Union, re def foo(pattern: Union[str, re.Pattern]) -> None: pass Exception traceback: Traceback (most rec