pip-tools

“A set of two command line tools (pip-review + pip-dump) to help you keep your pip-based packages fresh, even when you’ve pinned them.

pip-review checks PyPI and reports available updates. It uses the list of currently installed packages to check for updates, it does not use any requirements.txt.

pip-dump dumps the exact versions of installed packages in your active environment to your requirements.txt file.”

_{I haven’t used it yet, so this post a reminder for me. I think I will need it soon.}