cython

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# mode: run
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class plop(object):
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    def __init__(self):
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        pass
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class testobj(object):
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    def __init__(self):
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        pass
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    def __eq__(self, other):
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        return plop()
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def test_equals(x):
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    """
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    >>> x = testobj()
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    >>> result = test_equals(x)
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    >>> isinstance(result, plop)
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    True
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    >>> test_equals('hihi')
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    False
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    >>> test_equals('coucou')
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    True
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    """
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    eq = x == 'coucou'  # not every str equals returns a bool ...
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    return eq
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