Bug summary

Error while importing matplotlib qt backend.

The version details are as below
matplotlib: 3.6.1
pyside: 6.4.0
python: 3.9.9

on a macOS-M1 machine.

Code for reproduction

from matplotlib.backends.backend_qtagg import NavigationToolbar2QT as NavigationToolbar

Actual outcome

Traceback (most recent call last):
File "", line 1, in
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/matplotlib/backends/backend_qtagg.py", line 12, in
from .backend_qt import QtCore, QtGui, _BackendQT, FigureCanvasQT
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/matplotlib/backends/backend_qt.py", line 72, in
_MODIFIER_KEYS = [
File "/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages/matplotlib/backends/backend_qt.py", line 73, in
(_to_int(getattr(_enum("QtCore.Qt.KeyboardModifier"), mod)),
TypeError: int() argument must be a string, a bytes-like object or a number, not 'KeyboardModifier'

Expected outcome

No error!

Additional information

No response

Operating system

OS/X

Matplotlib Version

3.6.1

Matplotlib Backend

MacOSX

Python version

3.9.9

Jupyter version

No response

Installation

pip