Describe what you were trying to get done. When creating a python module from a string (PyModule FromString) the file parameter is always set to None. If I want to create a virtual package structure ...

flag --vocab_file=None: Flag --vocab_file must have a value other than None. #405 Open tungxd96 opened on Sep 23, 2020 ...

The newly approved Python Enhancement Proposal 751 gives Python a standard lock file format for specifying the dependencies of projects. Here’s the what, why, and when.