如何控制 pip3 安装软件包的位置？

Question

I updated pip3 and now packages are being installed for python 3.8 and not 3.9. What do I do to make it so that packages are installed to where they used to be installed?

I updated pip3 today using the command pip3 install --upgrade pip and then installed a new package with pip3 install statsmodels which did indeed install the package. I checked the install location with pip3 list -v and saw that the package and its dependencies were installed to /Users/myusername/Library/Python/3.8/lib/python/site-packages.

The problem is... this is not where my other packages are. pip3 list -v doesn't show any of the packages I've installed in the past (for example, I know I have matplotlib installed but it doesn't show up). I only use python 3.9, so I don't want any of my packages being installed for python 3.8 but don't know how to fix this.

Answer 1

If you want to change your default installation target

The --target switch is the thing you're looking for:

pip config set global.target /Users/Bob/Library/Python/3.8/lib/python/site-packages

Installs packages into directory provied. By default this will not replace existing files/folders in the directory. Use --upgrade to replace existing packages in with new versions.