#----------------------------------------------------------------------
# Copyright (c) 2008 Board of Trustees, Princeton University
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and/or hardware specification (the "Work") to
# deal in the Work without restriction, including without limitation the
# rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Work, and to permit persons to whom the Work
# is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Work.
#
# THE WORK IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# IN THE WORK.
#----------------------------------------------------------------------


class Enum(set):

    def __init__(self, *args, **kwds):
        set.__init__(self)
        enums = dict(list(zip(args, [object() for i in range(len(args))])), **kwds)
        for (key, value) in list(enums.items()):
            setattr(self, key, value)
            self.add(eval('self.%s' % key))


# def Enum2(*args, **kwds):
#    enums = dict(zip(sequential, range(len(sequential))), **named)
#    return type('Enum', (), enums)