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Description
Bug summary
When using "set_window_title" I get this error:
self.manager.set_window_title(title)
AttributeError: 'NoneType' object has no attribute 'set_window_title'
Located in this file and error:
File "..\lib\site-packages\matplotlib\backend_bases.py", line 2245, in set_window_title
self.manager.set_window_title(title)
AttributeError: 'NoneType' object has no attribute 'set_window_title'
Code for reproduction
self.canvas.set_window_title('Some Text')
- Operating system: Win 10
- Matplotlib version: 3.3.0rc1
- Matplotlib backend (
print(matplotlib.get_backend())): matplotlib.backends.backend_qt5agg - Python version: 3.7.7
- Other libraries: PyQt5: 5.15.0
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