@tramp
@houston4444 Maybe you've some fun by setup a virtual env script for your app
I perfectly know this method, but I don't want to use it because I want the program to use the default Qt Version, because all running Qt programs share the Qt lib. If I use virtual env (with a not default python version), there are many many chances that the Qt version used is not the default one, then the memory usage of the program may be much important, especially on KDE or LXQT desktop environments.