Today I found that some of my plotly functions were not working, and re-loading the pyxll files returned the message “could not import PySide6.Qtgui pyside6”. Searching for this problem I found:

After upgrading PySide6 gives error No module named ‘PySide6.QtWidgets’

In particular, the following procedure fixed the problem for me:

Solution :

$ python3.10 -m pip uninstall pyside6 pyside6-addons pyside6-essentials shiboken6
$ python3.10 -m pip cache purge
$ python3.10 -m pip install pyside6

It is necessary to clear cache files before reinstalling pyside6 other wise it will use previous cache files and the import error using continue to come.

But note that a following comment says that uninstalling and clearing the cache is not necessary.

$ python3.10 -m pip install --force-reinstall --no-cache-dir pyside6

No need to pip uninstall and pip cache clear