pydoc.py uses os.popen once on line 1359. According to the documentation that function is deprecated since Python 2.6. Does it make sense to rewrite that line using the newer subprocess instead? I am asking because os.popen stopped working for me in Python 3.1 but I don't know if it is worth investing time in a module that is deprecated when the newer one does work. http://bugs.python.org/issue6236