Emulating mode=map with python mapscript

[Howard Butler]

I think you need a blank line after the content type.  Here is how I did it
with earlier mapscript

>             print "Content-type: image/jpeg"
>             print
>             output = open(drgimagefilename, 'rb').read()
>             print output

That extra print statement after the printing of the content type ends the
header block.

Howard