Python Matplotlib hangs when asked to plot a second chart (after closing first chart window)

Question

Weird behaviour, I\'m sure it\'s me screwing up, but I\'d like to get to the bottom of what\'s happening:

I am running the following code to create a very simple graph

Answer 1

Three months late to the party, but I found a suggestion in the matlibplot documentation to use draw() rather than show(); the former apparently just does a render of the current plot, while the latter starts up all the interactive tools, which is where the problems seem to start.

It's not terribly prominently placed in the documentation, but here's the link: http://matplotlib.sourceforge.net/faq/howto_faq.html#use-show

For what it's worth, I've tried pylab.show() and had exactly the same issue you did, while pylab.draw() seems to work fine if I just want to see the output.