cpython/Lib/test/infinite_reload.py

# For testing http://python.org/sf/742342, which reports that Python
#  segfaults (infinite recursion in C) in the presence of infinite
#  reload()ing. This module is imported by test_import.py:test_infinite_reload
#  to make sure this doesn't happen any more.

import imp
import infinite_reload
imp.reload(infinite_reload)