python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Lib/encodings/undefined.py

@@ -0,0 +1,49 @@
+""" Python 'undefined' Codec
+
+    This codec will always raise a ValueError exception when being
+    used. It is intended for use by the site.py file to switch off
+    automatic string to Unicode coercion.
+
+Written by Marc-Andre Lemburg (mal@lemburg.com).
+
+(c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
+
+"""
+import codecs
+
+### Codec APIs
+
+class Codec(codecs.Codec):
+
+    def encode(self,input,errors='strict'):
+        raise UnicodeError("undefined encoding")
+
+    def decode(self,input,errors='strict'):
+        raise UnicodeError("undefined encoding")
+
+class IncrementalEncoder(codecs.IncrementalEncoder):
+    def encode(self, input, final=False):
+        raise UnicodeError("undefined encoding")
+
+class IncrementalDecoder(codecs.IncrementalDecoder):
+    def decode(self, input, final=False):
+        raise UnicodeError("undefined encoding")
+
+class StreamWriter(Codec,codecs.StreamWriter):
+    pass
+
+class StreamReader(Codec,codecs.StreamReader):
+    pass
+
+### encodings module API
+
+def getregentry():
+    return codecs.CodecInfo(
+        name='undefined',
+        encode=Codec().encode,
+        decode=Codec().decode,
+        incrementalencoder=IncrementalEncoder,
+        incrementaldecoder=IncrementalDecoder,
+        streamwriter=StreamWriter,
+        streamreader=StreamReader,
+    )