If it's just about displaying pydoc pages... SPE Python IDE has pydoc built in. Just open any file and click on the pydoc tab, next to the uml tab. Then you see the python documentation of that script, which is generated on the fly, If you want to see documentation about the sys module, just click in the upper right corner on the index link.
This works on Windows, Linux and Mac without a pain. Stani -- http://pythonide.stani.be -- http://mail.python.org/mailman/listinfo/python-list
