python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/test/test_threadedtempfile.py

@@ -0,0 +1,62 @@
+"""
+Create and delete FILES_PER_THREAD temp files (via tempfile.TemporaryFile)
+in each of NUM_THREADS threads, recording the number of successes and
+failures.  A failure is a bug in tempfile, and may be due to:
+
++ Trying to create more than one tempfile with the same name.
++ Trying to delete a tempfile that doesn't still exist.
++ Something we've never seen before.
+
+By default, NUM_THREADS == 20 and FILES_PER_THREAD == 50.  This is enough to
+create about 150 failures per run under Win98SE in 2.0, and runs pretty
+quickly. Guido reports needing to boost FILES_PER_THREAD to 500 before
+provoking a 2.0 failure under Linux.
+"""
+
+NUM_THREADS = 20
+FILES_PER_THREAD = 50
+
+import tempfile
+
+from test.support import start_threads, import_module
+threading = import_module('threading')
+import unittest
+import io
+from traceback import print_exc
+
+startEvent = threading.Event()
+
+class TempFileGreedy(threading.Thread):
+    error_count = 0
+    ok_count = 0
+
+    def run(self):
+        self.errors = io.StringIO()
+        startEvent.wait()
+        for i in range(FILES_PER_THREAD):
+            try:
+                f = tempfile.TemporaryFile("w+b")
+                f.close()
+            except:
+                self.error_count += 1
+                print_exc(file=self.errors)
+            else:
+                self.ok_count += 1
+
+
+class ThreadedTempFileTest(unittest.TestCase):
+    def test_main(self):
+        threads = [TempFileGreedy() for i in range(NUM_THREADS)]
+        with start_threads(threads, startEvent.set):
+            pass
+        ok = sum(t.ok_count for t in threads)
+        errors = [str(t.name) + str(t.errors.getvalue())
+                  for t in threads if t.error_count]
+
+        msg = "Errors: errors %d ok %d\n%s" % (len(errors), ok,
+            '\n'.join(errors))
+        self.assertEqual(errors, [], msg)
+        self.assertEqual(ok, NUM_THREADS * FILES_PER_THREAD)
+
+if __name__ == "__main__":
+    unittest.main()