Problems with the command "show".

Hi folks,

I have a problem when I use the command “show” in matplotlib. I have this code (campo is a matrix of float numbers):

from matplotlib.pyplot import figure, show, savefig
from matplotlib import cm, colors

fig=figure()
a=fig.add_subplot(111)
a.pcolormesh(vx,vz,campo)
show()

The first time that I run the code, there isn´t any problem but when I run the code twice, I can´t close the figure and Python give me this error message:

   "RunTime Error!

   This application has requested the RunTime to terminate it in an unusual way. Please contact the application´s support team for more information."

Somebody can help me?

Thank you in advance at all.

Oscar
Public University of Navarra.

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