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I have been facing a couple of issues in using matplotlib with Python 3. After getting rid of this one, I ran into a new one. When I tried to execute the histogram demo, I get this traceback.

Does anyone have an idea? My matplotlib version is: python3-matplotlib-1.2.0-8.fc18.x86_64 (i.e. 1.2 on Fedora 18).

Bugs filed:

  1. Fedora
  2. Matplotlib
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  • @eryksun It says: font_manager attribute not found o_O. Commented Mar 30, 2013 at 10:41
  • Okay, my bad. It reports True. Commented Mar 30, 2013 at 10:48
  • Thanks @eryksun. I went ahead and set it to False in /usr/lib/* itself. And it worked. You reckon I should report this as a bug upstream? Commented Mar 30, 2013 at 10:57

1 Answer 1

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Add this to the top of the histogram_demo.py, just before import numpy: 

from matplotlib import font_manager
font_manager.USE_FONTCONFIG = False

Or modify font_manager.py to change the value permanently.

As far as bug reports go, I'd report the USE_FONTCONFIG = True setting to the Fedora package manager. The subprocess output decoding issue (or regex pattern issue) in Python 3.x should be reported upstream to the matplotlib project.

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2 Comments

Adding the two lines in the histogram_demo.py file doesn't work, because USE_FONTCONFIG is set to True in font_manager.py, when its imported by backend_agg.py. Thanks for all your help.
@Amit: Sorry, I guess you're right. I only use matplotlib in 2.x. When I do import matplotlib it doesn't load the font_manager module. I have to import matplotlib.pyplot for that to happen.

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