Close #19409: add missing import in pkgutil

ncoghlan · ncoghlan · commit 862542e500f4 · 2013-10-27T00:27:39.000+10:00
diff --git a/Lib/pkgutil.py b/Lib/pkgutil.py
@@ -3,6 +3,7 @@
 from functools import singledispatch as simplegeneric
 import importlib
 import importlib.util
+import importlib.machinery
 import os
 import os.path
 import sys
