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Recursion error #15481

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#16028
Closed
Recursion error#15481
#16028
Labels
GUI: Qtstatus: confirmed bug
Milestone
v3.1.3
@timhoffm

Description

@timhoffm
timhoffm
opened on Oct 22, 2019

Bug report

Bug summary

When running https://matplotlib.org/gallery/event_handling/path_editor.html#sphx-glr-gallery-event-handling-path-editor-py I get a recursion error.

Can anybody reproduce this?

Code for reproduction
Environment:

conda create -n test-path-editor matplotlib pyqt python=3.7

Matplotlib version

  • Operating system: Linux
  • Matplotlib version: Tested on master and 3.1.1 and 3.0.3
  • Matplotlib backend (print(matplotlib.get_backend())): Qt5Agg
  • Python version: 3.7
  • Other libraries: Qt 5.9.2

Actual outcome

RecursionError: maximum recursion depth exceeded in comparison
Full traceback 

QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
QWidget::repaint: Recursive repaint detected
Traceback (most recent call last):
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/backends/backend_qt5.py", line 519, in _draw_idle
    self.draw()
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/backends/backend_agg.py", line 402, in draw
    self.figure.draw(self.renderer)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/artist.py", line 50, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/figure.py", line 1649, in draw
    renderer, self, artists, self.suppressComposite)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/image.py", line 138, in _draw_list_compositing_images
    a.draw(renderer)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/artist.py", line 50, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axes/_base.py", line 2628, in draw
    mimage._draw_list_compositing_images(renderer, self, artists)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/image.py", line 138, in _draw_list_compositing_images
    a.draw(renderer)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/artist.py", line 50, in draw_wrapper
    return draw(artist, renderer, *args, **kwargs)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py", line 1185, in draw
    ticks_to_draw = self._update_ticks(renderer)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py", line 1023, in _update_ticks
    tick_tups = list(self.iter_ticks())  # iter_ticks calls the locator
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py", line 967, in iter_ticks
    majorLocs = self.major.locator()
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/ticker.py", line 1985, in __call__
    return self.tick_values(vmin, vmax)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/ticker.py", line 1993, in tick_values
    locs = self._raw_ticks(vmin, vmax)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/ticker.py", line 1932, in _raw_ticks
    nbins = np.clip(self.axis.get_tick_space(),
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py", line 2154, in get_tick_space
    tick = self._get_tick(True)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py", line 1818, in _get_tick
    return XTick(self.axes, 0, '', major=major, **tick_kw)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py", line 174, in __init__
    self.tick1line = self._get_tick1line()
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py", line 470, in _get_tick1line
    markeredgewidth=self._width, zorder=self._zorder)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/lines.py", line 386, in __init__
    self._marker = MarkerStyle(marker, fillstyle)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/markers.py", line 245, in __init__
    self.set_marker(marker)
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/markers.py", line 302, in set_marker
    elif (isinstance(marker, Sized) and len(marker) in (2, 3) and
  File "/home/tim/anaconda3/envs/mpl311/lib/python3.7/abc.py", line 139, in __instancecheck__
    return _abc_instancecheck(cls, instance)
RecursionError: maximum recursion depth exceeded in comparison
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted
QWidget::paintEngine: Should no longer be called
QPainter::begin: Paint device returned engine == 0, type: 1
QPainter::end: Painter not active, aborted```

</p>
</details>

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