Saving .png figure failing on OSX backend #9156
Description
Bug report
Saving .png files is currently failing on the osx backend. I'm guessing this is due to #6603 (see the error message below)
Code for reproduction
import matplotlib
matplotlib.use('MacOSX')
import matplotlib.pyplot as plt
fig, ax = plt.subplots()
fig.savefig('test.png')Actual outcome
File "test.py", line 6, in <module>
fig.savefig('test.png')
File "/Users/dstansby/github/matplotlib/lib/matplotlib/figure.py", line 1813, in savefig
self.canvas.print_figure(fname, **kwargs)
File "/Users/dstansby/github/matplotlib/lib/matplotlib/backend_bases.py", line 2258, in print_figure
**kwargs)
File "/Users/dstansby/github/matplotlib/lib/matplotlib/backends/backend_agg.py", line 507, in print_png
FigureCanvasAgg.draw(self)
File "/Users/dstansby/github/matplotlib/lib/matplotlib/backends/backend_agg.py", line 429, in draw
toolbar.set_cursor(cursors.WAIT)
File "/Users/dstansby/github/matplotlib/lib/matplotlib/backends/backend_macosx.py", line 188, in set_cursor
_macosx.set_cursor(cursor)
SystemError: <built-in function set_cursor> returned NULL without setting an errorExpected outcome
Matplotlib version
- Operating System: OSX
- Matplotlib Version: Current master branch installed using pip
- Python Version: 3.6.2