cpython/PC/testpy.py

import sys

# This is a test module for Python.  It looks in the standard
# places for various *.py files.  If these are moved, you must
# change this module too.

try:
  import string
except:
  print """Could not import the standard "string" module.
Please check your PYTHONPATH environment variable."""
  sys.exit(1)

try:
  import regex_syntax
except:
  print """Could not import the standard "regex_syntax" module.  If this is
a PC, you should add the dos_8x3 directory to your PYTHONPATH."""
  sys.exit(1)

import os

for dir in sys.path:
  file = os.path.join(dir, "string.py")
  if os.path.isfile(file):
    test = os.path.join(dir, "test")
    if os.path.isdir(test):
      # Add the "test" directory to PYTHONPATH.
      sys.path = sys.path + [test]

import regrtest	# Standard Python tester.
regrtest.main()