Is there any solution regarding to PyQt library doesn't work in Mac OS Big Sur?

问题

I've done some project using PyQt library for my class assignmnet. And I need to check my application working before I submit it.

Today, 3 hours ago I updated my Mac book OS to Big Sur. And I found out that PyQt library doesn't work. It doesn't show any GUI.

Are there someone know how to fix it?

回答1:

Adding os.environ['QT_MAC_WANTS_LAYER'] = '1' fixes the issue on PyQT 5.15.1 (credits)

回答2:

Rolling back to PyQt5==5.13.0 fixed the issue for me! you should uninstall PyQt5 and then install it using pip install PyQt5==5.13.0

回答3:

It could be related to this.

If it is, then disconnecting from the internet would fix it. As would redirecting ocsp.apple.com to 0.0.0.0 in /etc/hosts.

回答4:

Related to this, after upgrading to BigSur my app stopped launching its window...I am using the official Qt supported binding PySide2/shiboken2

Upgrading from PySide2 5.12 to 5.15 fixed the issue.

Steps:

1. Remove PySide2/shiboken2

   pip3 uninstall PySide2

   pip3 uninstall shiboken2

2. Reinstall

   pip3 install PySide2

来源：https://stackoverflow.com/questions/64818879/is-there-any-solution-regarding-to-pyqt-library-doesnt-work-in-mac-os-big-sur