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 once had a similar problem. I solved it by adding these lines imediately after import matplotlib.pyplot as plt and after every subsequent plt.show():

plt.clf()
plt.cla()
plt.close()