python-3.6.zip added from Github

README.cosmo contains the necessary links.

third_party/python/Tools/scripts/fixps.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+
+# Fix Python script(s) to reference the interpreter via /usr/bin/env python.
+# Warning: this overwrites the file without making a backup.
+
+import sys
+import re
+
+
+def main():
+    for filename in sys.argv[1:]:
+        try:
+            f = open(filename, 'r')
+        except IOError as msg:
+            print(filename, ': can\'t open :', msg)
+            continue
+        line = f.readline()
+        if not re.match('^#! */usr/local/bin/python', line):
+            print(filename, ': not a /usr/local/bin/python script')
+            f.close()
+            continue
+        rest = f.read()
+        f.close()
+        line = re.sub('/usr/local/bin/python',
+                      '/usr/bin/env python', line)
+        print(filename, ':', repr(line))
+        f = open(filename, "w")
+        f.write(line)
+        f.write(rest)
+        f.close()
+
+if __name__ == '__main__':
+    main()