Class Proxy

Lib/test/test_descr.py:2345–2369

        self.assertNotIn(10, d1)
        # Test overridden behavior
        class Proxy(object):
            def __init__(self, x):
                self.x = x
            def __bool__(self):
                return not not self.x
            def __hash__(self):
                return hash(self.x)
            def __eq__(self, other):
                return self.x == other
            def __ne__(self, other):
                return self.x != other
            def __ge__(self, other):
                return self.x >= other
            def __gt__(self, other):
                return self.x > other
            def __le__(self, other):
                return self.x <= other
            def __lt__(self, other):
                return self.x < other
            def __str__(self):
                return "Proxy:%s" % self.x
            def __repr__(self):
                return "Proxy(%r)" % self.x
            def __contains__(self, value):
                return value in self.x
        p0 = Proxy(0)
        p1 = Proxy(1)
        p_1 = Proxy(-1)