python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Tools/test2to3/README

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+This project demonstrates how a distutils package
+can support Python 2.x and Python 3.x from a single
+source, using lib2to3.

third_party/python/Tools/test2to3/maintest.py

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+#!/usr/bin/env python3
+
+# The above line should get replaced with the path to the Python
+# interpreter; the block below should get 2to3-converted.
+
+try:
+    from test2to3.hello import hello
+except ImportError, e:
+    print "Import failed", e
+hello()

third_party/python/Tools/test2to3/setup.py

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+# -*- coding: iso-8859-1 -*-
+from distutils.core import setup
+
+try:
+    from distutils.command.build_py import build_py_2to3 as build_py
+except ImportError:
+    from distutils.command.build_py import build_py
+
+try:
+    from distutils.command.build_scripts import build_scripts_2to3 as build_scripts
+except ImportError:
+    from distutils.command.build_scripts import build_scripts
+
+setup(
+    name = "test2to3",
+    version = "1.0",
+    description = "2to3 distutils test package",
+    author = "Martin v. Löwis",
+    author_email = "python-dev@python.org",
+    license = "PSF license",
+    packages = ["test2to3"],
+    scripts = ["maintest.py"],
+    cmdclass = {'build_py': build_py,
+                'build_scripts': build_scripts,
+                }
+)

third_party/python/Tools/test2to3/test/runtests.py

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+# Fictitious test runner for the project
+
+import sys, os
+
+if sys.version_info > (3,):
+    # copy test suite over to "build/lib" and convert it
+    from distutils.util import copydir_run_2to3
+    testroot = os.path.dirname(__file__)
+    newroot = os.path.join(testroot, '..', 'build/lib/test')
+    copydir_run_2to3(testroot, newroot)
+    # in the following imports, pick up the converted modules
+    sys.path[0] = newroot
+
+# run the tests here...
+
+from test_foo import FooTest
+
+import unittest
+unittest.main()

third_party/python/Tools/test2to3/test/test_foo.py

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+import sys
+import unittest
+
+class FooTest(unittest.TestCase):
+    def test_foo(self):
+        # use 2.6 syntax to demonstrate conversion
+        print 'In test_foo, using Python %s...' % (sys.version_info,)
+        self.assertTrue(False)

third_party/python/Tools/test2to3/test2to3/__init__.py

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+# empty

third_party/python/Tools/test2to3/test2to3/hello.py

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+def hello():
+    try:
+        print "Hello, world"
+    except IOError, e:
+        print e.errno