tree fd1d6dda91a2988d54eb0cd89727646280435378
parent 8398713cea0eb17b013f25f86bef47c7e5e63139
author Steve Weber <steverweber@gmail.com> 1528678174 -0400
committer Ned Deily <nad@python.org> 1528678174 -0400

bpo-30167: Prevent site.main() exception if PYTHONSTARTUP is set. (GH-6731)

Before Python 3.6, os.path.abspath(None) used to report an AttributeError which was properly caught inside site.abs_paths, making it ignore __main__, one of sys.modules, which has __file__ and __cached__ set to None. With 3.6, os.path.abspath(None) raises TypeError instead which site.abs_path was not expecting.  This resulted in an uncaught exception if a user had PYTHONSTARTUP set and the application called site.main() which a number of third-party programs do.