Bug summary

import matplotlib.pyplot as plt

Nomatter what drawing behavior(plot, scatter...) I uesd, I would always get below error:

Traceback (most recent call last):
  File "dt.py", line 14, in <module>
    plt.scatter(x, y, s=area, c=colors, alpha=0.5)
  File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 2817, in scatter
    __ret = gca().scatter(
  File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 2272, in gca
    return gcf().gca(**kwargs)
  File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 865, in gcf
    return figure()
  File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 809, in figure
    FigureClass=FigureClass, **kwargs)
  File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 324, in new_figure_manager
    _warn_if_gui_out_of_main_thread()
  File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 314, in _warn_if_gui_out_of_main_thread
    if (_get_required_interactive_framework(_get_backend_mod())
  File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 217, in _get_backend_mod
    switch_backend(dict.__getitem__(rcParams, "backend"))
  File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 262, in switch_backend
    switch_backend(candidate)
  File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 282, in switch_backend
    class backend_mod(matplotlib.backend_bases._Backend):
  File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 283, in backend_mod
    locals().update(vars(importlib.import_module(backend_name)))
  File "C:\Python37\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "C:\Python37\Lib\site-packages\matplotlib\backends\backend_qtagg.py", line 12, in <module>
    from .backend_qt import (
  File "C:\Python37\Lib\site-packages\matplotlib\backends\backend_qt.py", line 76, in <module>
    for mod, key in [
  File "C:\Python37\Lib\site-packages\matplotlib\backends\backend_qt.py", line 76, in <listcomp>
    for mod, key in [
TypeError: int() argument must be a string, a bytes-like object or a number, not 'KeyboardModifier'

Code for reproduction

import matplotlib.pyplot as plt
import numpy as np

x = np.array([1, 2, 3, 4, 5, 6, 7, 8])
y = np.array([1, 4, 9, 16, 7, 11, 23, 18])

plt.scatter(x, y)
plt.show()

Actual outcome

Traceback (most recent call last): File "dt.py", line 14, in plt.scatter(x, y, s=area, c=colors, alpha=0.5) File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 2817, in scatter __ret = gca().scatter( File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 2272, in gca return gcf().gca(**kwargs) File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 865, in gcf return figure() File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 809, in figure FigureClass=FigureClass, **kwargs) File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 324, in new_figure_manager _warn_if_gui_out_of_main_thread() File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 314, in _warn_if_gui_out_of_main_thread if (_get_required_interactive_framework(_get_backend_mod()) File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 217, in _get_backend_mod switch_backend(dict.getitem(rcParams, "backend")) File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 262, in switch_backend switch_backend(candidate) File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 282, in switch_backend class backend_mod(matplotlib.backend_bases.Backend): File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 283, in backend_mod locals().update(vars(importlib.import_module(backend_name))) File "C:\Python37\lib\importlib_init.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "", line 1006, in _gcd_import File "", line 983, in _find_and_load File "", line 967, in _find_and_load_unlocked File "", line 677, in _load_unlocked File "", line 728, in exec_module File "", line 219, in _call_with_frames_removed File "C:\Python37\Lib\site-packages\matplotlib\backends\backend_qtagg.py", line 12, in from .backend_qt import ( File "C:\Python37\Lib\site-packages\matplotlib\backends\backend_qt.py", line 76, in for mod, key in [ File "C:\Python37\Lib\site-packages\matplotlib\backends\backend_qt.py", line 76, in for mod, key in [ TypeError: int() argument must be a string, a bytes-like object or a number, not 'KeyboardModifier'

Expected outcome

Scatter draw

Additional information

No response

Operating system

Windows

Matplotlib Version

3.5.3

Matplotlib Backend

Traceback (most recent call last): File "", line 1, in File "C:\Python37\Lib\site-packages\matplotlib_init_.py", line 1172, in get_backend return rcParams['backend'] File "C:\Python37\Lib\site-packages\matplotlib_init_.py", line 674, in getitem plt.switch_backend(rcsetup._auto_backend_sentinel) File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 262, in switch_backend switch_backend(candidate) File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 282, in switch_backend class backend_mod(matplotlib.backend_bases.Backend): File "C:\Python37\Lib\site-packages\matplotlib\pyplot.py", line 283, in backend_mod locals().update(vars(importlib.import_module(backend_name))) File "C:\Python37\lib\importlib_init.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level) File "", line 1006, in _gcd_import File "", line 983, in _find_and_load File "", line 967, in _find_and_load_unlocked File "", line 677, in _load_unlocked File "", line 728, in exec_module File "", line 219, in _call_with_frames_removed File "C:\Python37\Lib\site-packages\matplotlib\backends\backend_qtagg.py", line 12, in from .backend_qt import ( File "C:\Python37\Lib\site-packages\matplotlib\backends\backend_qt.py", line 76, in for mod, key in [ File "C:\Python37\Lib\site-packages\matplotlib\backends\backend_qt.py", line 76, in for mod, key in [ TypeError: int() argument must be a string, a bytes-like object or a number, not 'KeyboardModifier'

Python version

3.7.0

Jupyter version

No response

Installation

pip