"from distutils.core import" it.
import sys, os
from types import *
from distutils.errors import *
+
+# Mainly import these so setup scripts can "from distutils.core import" them.
from distutils.dist import Distribution
from distutils.cmd import Command
+from distutils.extension import Extension
+
# This is a barebones help message generated displayed when the user
# runs the setup script with no arguments at all. More useful help