René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Recursion error","articleBody":"### Bug report\r\n\r\n**Bug summary**\r\n\r\nWhen running https://matplotlib.org/gallery/event_handling/path_editor.html#sphx-glr-gallery-event-handling-path-editor-py I get a recursion error.\r\n\r\nCan anybody reproduce this?\r\n\r\n\r\n**Code for reproduction**\r\nEnvironment:\r\n~~~\r\nconda create -n test-path-editor matplotlib pyqt python=3.7\r\n~~~\r\n\r\n**Matplotlib version**\r\n  * Operating system: Linux\r\n  * Matplotlib version: Tested on master and 3.1.1 and 3.0.3\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): Qt5Agg\r\n  * Python version: 3.7\r\n  * Other libraries: Qt 5.9.2\r\n\r\n\u003c!--Please tell us how you installed matplotlib and python e.g., from source, pip, conda--\u003e\r\n\u003c!--If you installed from conda, please specify which channel you used if not the default--\u003e\r\n\r\n**Actual outcome**\r\n\r\n~~~\r\nRecursionError: maximum recursion depth exceeded in comparison\r\n~~~\r\n\r\n\u003cdetails\u003e\u003csummary\u003eFull traceback\u003c/summary\u003e\r\n\u003cp\u003e\r\n\r\n```\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nQWidget::repaint: Recursive repaint detected\r\nTraceback (most recent call last):\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/backends/backend_qt5.py\", line 519, in _draw_idle\r\n    self.draw()\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/backends/backend_agg.py\", line 402, in draw\r\n    self.figure.draw(self.renderer)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/artist.py\", line 50, in draw_wrapper\r\n    return draw(artist, renderer, *args, **kwargs)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/figure.py\", line 1649, in draw\r\n    renderer, self, artists, self.suppressComposite)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/image.py\", line 138, in _draw_list_compositing_images\r\n    a.draw(renderer)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/artist.py\", line 50, in draw_wrapper\r\n    return draw(artist, renderer, *args, **kwargs)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axes/_base.py\", line 2628, in draw\r\n    mimage._draw_list_compositing_images(renderer, self, artists)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/image.py\", line 138, in _draw_list_compositing_images\r\n    a.draw(renderer)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/artist.py\", line 50, in draw_wrapper\r\n    return draw(artist, renderer, *args, **kwargs)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py\", line 1185, in draw\r\n    ticks_to_draw = self._update_ticks(renderer)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py\", line 1023, in _update_ticks\r\n    tick_tups = list(self.iter_ticks())  # iter_ticks calls the locator\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py\", line 967, in iter_ticks\r\n    majorLocs = self.major.locator()\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/ticker.py\", line 1985, in __call__\r\n    return self.tick_values(vmin, vmax)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/ticker.py\", line 1993, in tick_values\r\n    locs = self._raw_ticks(vmin, vmax)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/ticker.py\", line 1932, in _raw_ticks\r\n    nbins = np.clip(self.axis.get_tick_space(),\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py\", line 2154, in get_tick_space\r\n    tick = self._get_tick(True)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py\", line 1818, in _get_tick\r\n    return XTick(self.axes, 0, '', major=major, **tick_kw)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py\", line 174, in __init__\r\n    self.tick1line = self._get_tick1line()\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/axis.py\", line 470, in _get_tick1line\r\n    markeredgewidth=self._width, zorder=self._zorder)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/lines.py\", line 386, in __init__\r\n    self._marker = MarkerStyle(marker, fillstyle)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/markers.py\", line 245, in __init__\r\n    self.set_marker(marker)\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/site-packages/matplotlib/markers.py\", line 302, in set_marker\r\n    elif (isinstance(marker, Sized) and len(marker) in (2, 3) and\r\n  File \"/home/tim/anaconda3/envs/mpl311/lib/python3.7/abc.py\", line 139, in __instancecheck__\r\n    return _abc_instancecheck(cls, instance)\r\nRecursionError: maximum recursion depth exceeded in comparison\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted\r\nQWidget::paintEngine: Should no longer be called\r\nQPainter::begin: Paint device returned engine == 0, type: 1\r\nQPainter::end: Painter not active, aborted```\r\n\r\n\u003c/p\u003e\r\n\u003c/details\u003e\r\n\r\n","author":{"url":"https://github.com/timhoffm","@type":"Person","name":"timhoffm"},"datePublished":"2019-10-22T17:47:02.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/15481/matplotlib/issues/15481"}