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To be more specific: If I have packages that have been installed via an older version of pip, then should I do something after upgrading pip itself to the latest version?

NeoZoom.lua
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    You probably don't need to do anything more. But if you did something unusual then maybe. If you simply did more or less [this](https://stackoverflow.com/a/15223296/2550406) then you shouldn't have to do anything further – lucidbrot Feb 25 '22 at 14:27
  • @lucidbrot So pip won't detect new stuff on those existing packages after upgrading itself? (Sorry, I know nothing about pip) – NeoZoom.lua Feb 25 '22 at 14:33
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    I believe, and [this Q&A seems to support this](https://stackoverflow.com/questions/56499418/what-is-the-use-of-upgrading-pip/56499710), that upgrading `pip` just means you get some bugfixes or new features for `pip`. The packages you actually rely on in your code should already have worked and the only reason you'd have to do something after upgrading pip is if there was a bug in pip that caused you to have issues installing some package that you hope is now fixed – lucidbrot Feb 25 '22 at 15:37

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To answer myself: No. So don't worry. But the next time you want to install a new package, please run pip install --upgrade pip first.

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