René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"MathTex Font error","articleBody":"Matplotlib 1.5.1rc1 (from conda repo)\nseaborn 0.6\nAnaconda\npython 3.4 \nnotebook 4.0.5\nMac OS X\nbackend inline\n\nPlotting a figure with a bunch of mathtex formulas results in an error. Re-executing **the same** cell many times I get the error most of the time and the correct plot sometimes.\n\nThe stack trace is very long and termitates with:\n\n```\n\n/Users/anto/anaconda/envs/py3/lib/python3.4/site-packages/matplotlib/mathtext.py in __init__(self, default_font_prop, mathtext_backend)\n    567 \n    568         filename = findfont(default_font_prop)\n--\u003e 569         default_font = self.CachedFont(FT2Font(filename))\n    570         self._fonts['default'] = default_font\n    571         self._fonts['regular'] = default_font\n\nTypeError: First argument must be a path or file object reading bytes\n```\n\nThe plotting code is something like this:\n\n```\nlt, = plot(tt, res.eval(x=tt))\nplot(t, Ratio, 'o', color=lt.get_color())\nv = 0\nfor resG in resultsGauss:\n    lf, = plot(tt, resG.eval(x=tt))\n    plt.text(8.5, 0.7 - v, r\"$\\tau = %.2f s$\" % resG.values['tau'], fontsize=24)\n    plt.text(3, 0.7 - v, resG.model.func.__doc__, fontsize=24)\n    v += 0.2\nplot(t, RatioGauss, 'o', color=bpl.red)\n```\n\nAnd when it succeeds it generates a plot like this:\n\n![download](https://cloud.githubusercontent.com/assets/4156237/10358575/9b212152-6d44-11e5-9791-9f32bef50fe5.png)\n\nI'll update the issue if I can create a standalone example.\n\nxref: maybe related to #3086\n","author":{"url":"https://github.com/tritemio","@type":"Person","name":"tritemio"},"datePublished":"2015-10-08T05:46:40.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":10},"url":"https://github.com/5208/matplotlib/issues/5208"}