I recently tossed off a module to generate UUIDs
because i needed one.  Fredrik Lundh suggested i submit
it here for inclusion in the standard library.

See http://zesty.ca/python/uuid.html for a pydoc page.

The module provides a UUID class for representing UUIDs
and can generate version 1, 3, 4, or 5 UUIDs.

One drawback of the implementation is that it currently
runs external programs ("ipconfig" or "ifconfig") to
obtain the Ethernet hardware address used in a version
1 UUID.  The version 1 UUID implementation also does
not use persistent storage to determine the clock
sequence number.