python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/test/test_doctest.txt

@@ -0,0 +1,17 @@
+This is a sample doctest in a text file.
+
+In this example, we'll rely on a global variable being set for us
+already:
+
+  >>> favorite_color
+  'blue'
+
+We can make this fail by disabling the blank-line feature.
+
+  >>> if 1:
+  ...    print('a')
+  ...    print()
+  ...    print('b')
+  a
+  <BLANKLINE>
+  b