Python library loss after update python version.

[zhangzhishan]

After update python version, the original library installed by pip is located in the old version folder. It can not be used directly through command line.

[copdips]

just reinstall them by pip install ?

[Deide]

One option is to make use of some virtualenv/venv

[thorstenkampe]

I don't understand why the Scoop mechanism for persisting data is not used. Is the package maintainer aware of this mechanism?

[zhoujin7]

I don't understand why the Scoop mechanism for persisting data is not used. Is the package maintainer aware of this mechanism?

After upgrading python, there is no guarantee that the previously installed libraries are still compatible. It is best to reinstall them.

[thorstenkampe]

A minor upgrade - say from 3.8.0 to 3.8.1 - is always compatible. Only a major upgrade - say from 3.7 to 3.8 - will affect libraries which have a binary component (pyd files).

Not persisting site-packages at all is the worst option. If I reinstall Python (scoop update --force) or uninstall the old Python (scoop cleanup python) ALL packages will be gone! How do I reinstall packages that have been deleted without a trace?

[zhoujin7]

A minor upgrade - say from 3.8.0 to 3.8.1 - is always compatible. Only a major upgrade - say from 3.7 to 3.8 - will affect libraries which have a binary component (pyd files).

Not persisting site-packages at all is the worst option. If I reinstall Python (scoop update --force) or uninstall the old Python (scoop cleanup python) ALL packages will be gone! How do I reinstall packages that have been deleted without a trace?

It is not always compatible, even if a minor upgrade, some libraries is not pure python.
You can install multiple versions at the same time and use virtualenv, such as venv.
Write a new application, usually using a fixed python version.

[zanglg]

maybe persisting a site-packages folder with python version is a good solution, like: persist/python3.9/site-packages

[Cologler]

A minor upgrade - say from 3.8.0 to 3.8.1 - is always compatible. Only a major upgrade - say from 3.7 to 3.8 - will affect libraries which have a binary component (pyd files).

Not persisting site-packages at all is the worst option. If I reinstall Python (scoop update --force) or uninstall the old Python (scoop cleanup python) ALL packages will be gone! How do I reinstall packages that have been deleted without a trace?

You should install packages in user site: pip install --user ...