python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/test/test_idle.py

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+import unittest
+from test.support import import_module
+
+# For 3.6, skip test_idle if threads are not supported.
+import_module('threading')  # Imported by PyShell, imports _thread.
+
+# Skip test_idle if _tkinter wasn't built, if tkinter is missing,
+# if tcl/tk is not the 8.5+ needed for ttk widgets,
+# or if idlelib is missing (not installed).
+tk = import_module('tkinter')  # imports _tkinter
+if tk.TkVersion < 8.5:
+    raise unittest.SkipTest("IDLE requires tk 8.5 or later.")
+idlelib = import_module('idlelib')
+
+# Before importing and executing more of idlelib,
+# tell IDLE to avoid changing the environment.
+idlelib.testing = True
+
+# Unittest.main and test.libregrtest.runtest.runtest_inner
+# call load_tests, when present here, to discover tests to run.
+from idlelib.idle_test import load_tests
+
+if __name__ == '__main__':
+    tk.NoDefaultRoot()
+    unittest.main(exit=False)
+    tk._support_default_root = 1
+    tk._default_root = None