matplotlib: RuntimeError: Python is not installed as a framework

Question

This question has been asked before, in here, also here. However, the solution didn't fix the problem for my case.

The original error is, when I try to import matplotlib.pyplot, I got:

Traceback (most recent call last): File "", line 1, in File "/Users/XX/anaconda/lib/python2.7/site-packages/matplotlib/pyplot.py", line 114, in _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup() File "/Users/XX/anaconda/lib/python2.7/site-packages/matplotlib/backends/init.py", line 32, in pylab_setup globals(),locals(),[backend_name],0) File "/Users/XX/anaconda/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.py", line 24, in from matplotlib.backends import _macosx RuntimeError: Python is not installed as a framework. The Mac OS X backend will not be able to function correctly if Python is not installed as a framework. See the Python documentation for more information on installing Python as a framework on Mac OS X. Please either reinstall Python as a framework, or try one of the other backends. If you are Working with Matplotlib in a virtual enviroment see 'Working with Matplotlib in Virtual environments' in the Matplotlib FAQ

I followed the solutions to add a ~/.matplotlib/matplotlibrc file with the code: backend: TkAgg. After doing that, my error changed to:

/Users/XX/anaconda/lib/python2.7/site-packages/matplotlib/font_manager.py:273: UserWarning: Matplotlib is building the font cache using fc-list. This may take a moment. warnings.warn('Matplotlib is building the font cache using fc-list. This may take a moment.') objc[25120]: Class TKApplication is implemented in both /Users/XX/anaconda/lib/libtk8.5.dylib and /System/Library/Frameworks/Tk.framework/Versions/8.5/Tk. One of the two will be used. Which one is undefined. objc[25120]: Class TKMenu is implemented in both /Users/XX/anaconda/lib/libtk8.5.dylib and /System/Library/Frameworks/Tk.framework/Versions/8.5/Tk. One of the two will be used. Which one is undefined. objc[25120]: Class TKContentView is implemented in both /Users/XX/anaconda/lib/libtk8.5.dylib and /System/Library/Frameworks/Tk.framework/Versions/8.5/Tk. One of the two will be used. Which one is undefined. objc[25120]: Class TKWindow is implemented in both /Users/XX/anaconda/lib/libtk8.5.dylib and /System/Library/Frameworks/Tk.framework/Versions/8.5/Tk. One of the two will be used. Which one is undefined.

I have no idea how to fix that. I'm not using a virtual machine. Could you help me? Thank you!

PS: I found out that by adding:

import matplotlib
matplotlib.use('TkAgg')

before import matplotlib.pyplot, it seems to work. But adding those two lines of codes every time is annoying... Does anyone know what's going on and how I can fix it? Thank you!

Answer 1

I run my script in virtualenv. Python version is 3.5.

Add a line:

backend: TkAgg 

in file:

~/.matplotlib/matplotlibrc 

This solved the problem.

If you want to know more about why adding this solves the problem, you can read about customizing matplotlib's backend. And TkAgg solves this issue because of it's dependency with Tkinter.

Answer 2

Below worked for me:

import matplotlib   matplotlib.use('TkAgg')    import matplotlib.pyplot as plt   

Reference: https://github.com/tensorflow/tensorflow/issues/2375