René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"examples/cursor.py gives RuntimeError on mac osx","articleBody":"I ran cursor.py, downloaded from the matplotlib/examples/widgets web page.\n\nI'm on mac osx 10.9.4, anaconda latest as of today, matplotlib 1.3.1\n\nthe output is this:\n\n``` python\n\n79-118-141-238:wigets ifmichael$ python cursor.py\nTraceback (most recent call last):\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/artist.py\", line 55, in draw_wrapper\n    draw(artist, renderer, *args, **kwargs)\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/figure.py\", line 1040, in draw\n    self.canvas.draw_event(renderer)\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/backend_bases.py\", line 1693, in draw_event\n    self.callbacks.process(s, event)\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/cbook.py\", line 527, in process\n    proxy(*args, **kwargs)\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/cbook.py\", line 405, in __call__\n    return mtd(*args, **kwargs)\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/widgets.py\", line 865, in clear\n    self.background = self.canvas.copy_from_bbox(self.ax.bbox)\nAttributeError: 'FigureCanvasMac' object has no attribute 'copy_from_bbox'\nTraceback (most recent call last):\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/backend_bases.py\", line 1834, in motion_notify_event\n    self.callbacks.process(s, event)\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/cbook.py\", line 527, in process\n    proxy(*args, **kwargs)\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/cbook.py\", line 405, in __call__\n    return mtd(*args, **kwargs)\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/widgets.py\", line 892, in onmove\n    self._update()\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/widgets.py\", line 899, in _update\n    self.ax.draw_artist(self.linev)\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/axes.py\", line 2098, in draw_artist\n    a.draw(self._cachedRenderer)\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/artist.py\", line 55, in draw_wrapper\n    draw(artist, renderer, *args, **kwargs)\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/lines.py\", line 526, in draw\n    gc = renderer.new_gc()\n  File \"/Users/ifmichael/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.py\", line 97, in new_gc\n    self.gc.save()\nRuntimeError: CGContextRef is NULL\n\n```\n\nMaybe this issue was resolved in 1.4.0, but I cannot install it (see #3517)\n","author":{"url":"https://github.com/ifmihai","@type":"Person","name":"ifmihai"},"datePublished":"2014-10-23T11:11:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/3708/matplotlib/issues/3708"}