it's a very common question here. try to search for an answer http://groups.google.com/group/comp.lang.python/search?q=python+ide&start=0&scoring=d&;
also see http://wiki.python.org/moin/PythonEditors and http://wiki.python.org/moin/IntegratedDevelopmentEnvironments -- http://mail.python.org/mailman/listinfo/python-list
