I want to find a easy-to-use OCR python module in linux, I have found pytesser http://code.google.com/p/pytesser/, but it contains a .exe executable file.
I tried ch
You have a bunch of options here.
One way, as others pointed out is to use tesseract. Looks like there are a bunch of wrappers by now, so best way is to do a quick pypi search for it. The most used ones these days are:
Another useful site for finding similar engines is alternative.to. A few linux based systems according to them are: