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.

If you work with files on a regular basis from within Python programs, I suggest you look at pathlib. It's not revolutionary, but it does help to bring a lot of file-manipulating code under one roof.

Some file operations on Windows have been changed for the sake of safety and consistency in the upcoming Java update.