import threading after _multiprocessing to raise a more revelant error message:
"No module named _multiprocessing". _multiprocessing is not compiled without
thread support.
#
import unittest
-import threading
import Queue
import time
import sys
import logging
from test import test_support
from StringIO import StringIO
-
-
_multiprocessing = test_support.import_module('_multiprocessing')
+# import threading after _multiprocessing to raise a more revelant error
+# message: "No module named _multiprocessing". _multiprocessing is not compiled
+# without thread support.
+import threading
# Work around broken sem_open implementations
test_support.import_module('multiprocessing.synchronize')