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  • Committer: Mike C. Fletcher
  • Date: 2011-11-30 01:55:05 UTC
  • Revision ID: mcfletch@vrplumber.com-20111130015505-1po5tzzfydky7n5y
Eliminate support for Python 2.2, and with it the booleanfix module, which blew up on Python 3.x

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basictypes/booleanfix.py
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"""Hack to provide Python 2.3-style boolean operation in 2.2
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"""
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try:
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        if str(True) != 'True':
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                # Python 2.2.3 has True, but it's just 1 and 0 refs...
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                raise NameError
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        True = True
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        False = False
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        bool = bool
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except NameError:
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        class bool(int):
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                def __new__(cls, val=0):
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                        # This constructor always returns an existing instance
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                        if val:
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                                return True
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                        else:
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                                return False
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                def __repr__(self):
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                        if self:
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                                return "True"
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                        else:
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                                return "False"
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                __str__ = __repr__
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                def __and__(self, other):
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                        if isinstance(other, bool):
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                                return bool(int(self) & int(other))
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                        else:
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                                return int.__and__(self, other)
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                __rand__ = __and__
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                def __or__(self, other):
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                        if isinstance(other, bool):
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                                return bool(int(self) | int(other))
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                        else:
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                                return int.__or__(self, other)
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                __ror__ = __or__
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                def __xor__(self, other):
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                        if isinstance(other, bool):
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                                return bool(int(self) ^ int(other))
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                        else:
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                                return int.__xor__(self, other)
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                __rxor__ = __xor__
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        # Bootstrap truth values through sheer willpower
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        False = int.__new__(bool, 0==1)
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        True = int.__new__(bool, 1==1)
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        def install():
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                """Install the enhanced bool, True and False in __builtin__"""
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                import __builtin__
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                __builtin__.True = True
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                __builtin__.False = False
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                __builtin__.bool = bool
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        #install()
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if __name__ == "__main__":
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        assert True == 1
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        assert False == 0
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