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.

Python Enhancement Proposal (PEP) 751, accepted March 31, aims to create a new file format for specifying dependencies that is machine-generated and human-readable.

Triggering FormatDocument (by ctrl-click and selecting option, keyshortcut, or format on save) does not result in reformatted Python code. Running black from the command-line on the same open file ...