Cut and paste an EPS file

[John Henry]

I am looking for a Python tookit that will enable me to cut section of
a picture out from an EPS file and create another EPS file.

I am using a proprietary package for doing certain engineering
calculations.  It creates single page x-y line plots that has too much
blank spaces around the plotted area located at the top 2/3 of the
page.  I like to be  "cut" that white space out by extracting the image
out and may be scale it up - while keeping the bottom 1/3 unchanged.

Does anybody has any suggestions?

Thanks,

--
JH