Returning Matplotlib image as string

Question

I am using matplotlib in a django app and would like to directly return the rendered image. So far I can go plt.savefig(...), then return the location of the im

Answer 1

what about cStringIO?

import pylab
import cStringIO
pylab.plot([3,7,2,1])
output = cStringIO.StringIO()
pylab.savefig('test.png', dpi=75)
pylab.savefig(output, dpi=75)
print output.getvalue() == open('test.png', 'rb').read() # True