> How about having a pseudo-module called __typing__ that is > ignored by the compiler: > > from __typing__ import ... > > would be compiled to a no-op, but recognised by type checkers.
If you want to do run-time typing stuff, you would use There is already a way of doing that: `if typing.TYPE_CHECKING: ...` https://docs.python.org/3/library/typing.html#typing.TYPE_CHECKING But yes, the issue with it is that this constant is defined in the `typing` module … However, I think this is a part of the solution. Indeed, the language could define another builtin constants, let's name it `__static__`, which would simply be always false (at runtime), while linters/type checkers would use it the same way `typing.TYPE_CHECKING` is used: ```python if __static__: import typing import expensive_module ``` _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/ORL4B4RISFYIROSPGL4B4AVNWEOXP2TS/ Code of Conduct: http://python.org/psf/codeofconduct/
