I've been using the python version 3.6.5 for quite some time now and have installed a whole set of modules with it, and now I'm trying to change into version 3.8.5, because I couldn't get certain vim plugins to work with older versions. The problem is that by changing to this one I have to install all the packages I used before and possibly crash some programs developped along the way. Is there any way to pass the modules installed in the previous version to a new version? Thank you in advance.
1 Answers
What you can do is use pip to get the installed packages from your old install.
freeze will build a requirements list with exact versions installed currently and store them into file install_list.txt
pip freeze > install_list.txt
Then in the new install you can run install with a -requirements file specified to install from.
pip install -r install_list.txt
Best is to start using virtual environments then each application can have its own container and not be concerned about loss of dependencies.
Note that this should at least give you a starting point for installs and might need to have multiple runs as it lists them in alphabetical order. You could edit the install_list.txt to order them by best install order for dependencies or to remote strict versioning (by default it is an == or exact version install)
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