René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"\"Too many open files\" in test runs on Python 3.3","articleBody":"The OSX testing juggernaut rolls on.  For tests on Python 3.3.5, I am getting multiple (\u003e 400) test errors related to \"Too many open files\":\n\n```\n======================================================================\nERROR: matplotlib.tests.test_mathtext.test_mathtext_cm_37.test\n----------------------------------------------------------------------\nTraceback (most recent call last):\n  File \"/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/nose/case.py\", line 198, in runTest\n    self.test(*self.arg)\n  File \"/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/matplotlib/testing/decorators.py\", line 51, in failer\n    result = f(*args, **kwargs)\n  File \"/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/matplotlib/testing/decorators.py\", line 183, in do_test\n    figure.savefig(actual_fname, **self._savefig_kwarg)\n  File \"/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/matplotlib/figure.py\", line 1470, in savefig\n    self.canvas.print_figure(*args, **kwargs)\n  File \"/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/matplotlib/backend_bases.py\", line 2192, in print_figure\n    **kwargs)\n  File \"/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/matplotlib/backends/backend_pdf.py\", line 2475, in print_pdf\n  File \"/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/matplotlib/backends/backend_pdf.py\", line 525, in close\n  File \"/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/matplotlib/backends/backend_pdf.py\", line 628, in writeFonts\n  File \"/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/matplotlib/backends/backend_pdf.py\", line 798, in embedTTF\nOSError: [Errno 24] Too many open files: '/Library/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/matplotlib/mpl-data/fonts/ttf/cmr10.ttf'\n```\n\nSee: \n- https://s3.amazonaws.com/archive.travis-ci.org/jobs/30947790/log.txt\n- https://s3.amazonaws.com/archive.travis-ci.org/jobs/30947803/log.txt\n\nI wasn't getting this failure for the multiprocess tests on previous Python 3.3 runs (which will have been testing a different commit on the 1.4.x branch):\n\nhttps://s3.amazonaws.com/archive.travis-ci.org/jobs/30794971/log.txt\n\nI assume this is because the multiprocess tests were each only using a smaller number of open files per process.\n\nAny ideas why this should be happening for Python 3.3 specifically, not 2.7 or 3.4?\n","author":{"url":"https://github.com/matthew-brett","@type":"Person","name":"matthew-brett"},"datePublished":"2014-07-27T05:26:36.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/3315/matplotlib/issues/3315"}