Cannot edit text in chart exported by Matplotlib and opened in Illustrator

Question

I am exporting charts from matplotlib and editing them in Illustrator. It's great that I can edit the lines, but the text also comes in as lines, so I cannot change fonts, edit text, etc. I've exported as EPS, PDF, and PS with the same issues.

I'm using matplotlib version 1.0.1 with python 2.7.1 on OSX Snow Leaopard.

I appreciate any insights offered! I tried using pdf2ps as suggested here, but all that did was degrade the quality of the image without making the text rendered as real text. pdftops looked nicer, but still can't edit the text results.