Matplotlib: WebAgg backend doesn't show any figures

Question

I'm using Python 2.7.6 32-bit with Matplotlib 1.3.1.
When I use the default backend, like in this example, the figure is shown:

import matplotlib.pyplot as plt
plt.plot(range(10))
plt.show()

When I try to use WebAgg, the MPL page loads automatically, but without any figures:

import matplotlib
matplotlib.use('webagg')
import matplotlib.pyplot as plt
plt.plot(range(10))
plt.show()

I tested this code on Windows and Ubuntu, using Firefox, Chrome and IE, without any success...
Can somebody help, please? Thanks in advance!

Answer 1

After a lot of searching and testing, I ended up using pip to uninstall Matplotlib, then reinstall it (using the --upgrade command, just to be sure):

pip uninstall matplotlib
pip install matplotlib --upgrade

And it worked! Now I can see the WebAgg plots on the browser window! Maybe I wasn't installing Matplotlib properly...

Thanks for the suggestions!