Matplotlib.Pyplot does not show output; No Error

Question

My platform is as follows

Centos 6.x (VirtualBox VM running on Win-7 host), Python 2.6.6, Matplotlib 1.3.1, Numpy 1.8.0, Scipy 0.14.0.dev-bb608ba

I am runnin

Answer 1

I am having the exact same problem. However, this was my fix after a little bit of research:

sudo yum install PyQt4
sudo gedit file at mpl.matplotlib_fname()

Change the first and only uncommented setting (as default) at line 32:

backend : Qt4Agg