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[Bug]: Tool Manager example broken #22088

Closed
@StefRe

Description

@StefRe

Bug summary

The Tool Manager example doesn't work.

Code for reproduction

python toolmanager_sgskip.py

Actual outcome

Traceback (most recent call last):
  File "C:\Programs\Python38\lib\site-packages\matplotlib\backends\backend_qt.py", line 930, in handler
    self.trigger_tool(name)
  File "C:\Programs\Python38\lib\site-packages\matplotlib\backend_bases.py", line 3391, in trigger_tool
    self.toolmanager.trigger_tool(name, sender=self)
  File "C:\Programs\Python38\lib\site-packages\matplotlib\backend_managers.py", line 379, in trigger_tool
    self._trigger_tool(name, sender, canvasevent, data)
  File "C:\Programs\Python38\lib\site-packages\matplotlib\backend_managers.py", line 394, in _trigger_tool
    tool.trigger(sender, canvasevent, data)
  File "C:\Programs\Python38\lib\site-packages\matplotlib\backends\backend_qt.py", line 970, in trigger
    NavigationToolbar2QT.configure_subplots(
  File "C:\Programs\Python38\lib\site-packages\matplotlib\backends\backend_qt.py", line 753, in configure_subplots
    if self._subplot_dialog is None:
AttributeError: 'types.SimpleNamespace' object has no attribute '_subplot_dialog'

Expected outcome

  • tools being added
  • no crash

Additional information

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Matplotlib Version

3.5.1

Matplotlib Backend

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Python version

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Jupyter version

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Installation

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