python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Tools/unicode/comparecodecs.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python3
+
+""" Compare the output of two codecs.
+
+(c) Copyright 2005, Marc-Andre Lemburg (mal@lemburg.com).
+
+    Licensed to PSF under a Contributor Agreement.
+
+"""
+import sys
+
+def compare_codecs(encoding1, encoding2):
+
+    print('Comparing encoding/decoding of   %r and   %r' % (encoding1, encoding2))
+    mismatch = 0
+    # Check encoding
+    for i in range(sys.maxunicode+1):
+        u = chr(i)
+        try:
+            c1 = u.encode(encoding1)
+        except UnicodeError as reason:
+            c1 = '<undefined>'
+        try:
+            c2 = u.encode(encoding2)
+        except UnicodeError as reason:
+            c2 = '<undefined>'
+        if c1 != c2:
+            print(' * encoding mismatch for 0x%04X: %-14r != %r' % \
+                  (i, c1, c2))
+            mismatch += 1
+    # Check decoding
+    for i in range(256):
+        c = bytes([i])
+        try:
+            u1 = c.decode(encoding1)
+        except UnicodeError:
+            u1 = '<undefined>'
+        try:
+            u2 = c.decode(encoding2)
+        except UnicodeError:
+            u2 = '<undefined>'
+        if u1 != u2:
+            print(' * decoding mismatch for 0x%04X: %-14r != %r' % \
+                  (i, u1, u2))
+            mismatch += 1
+    if mismatch:
+        print()
+        print('Found %i mismatches' % mismatch)
+    else:
+        print('-> Codecs are identical.')
+
+if __name__ == '__main__':
+    compare_codecs(sys.argv[1], sys.argv[2])