Spoken like someone who's never had to step into a 2 million line python library and try to decipher or debug it. Also, we've been using non-standard type hint

Spoken like someone who's never had to step into a 2 million line python library and try to decipher or debug it. Also, we've been using non-standard type hints for nearly all of python 2, they were just non-uniformly specified in docstrings and weren't easily referenced or introspected for tooling and IDE's to work with them.