cython

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# cython: binding=True
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# mode: run
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# tag: cyfunction
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cdef class TestMethodOneArg:
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    def meth(self, arg):
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        pass
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def call_meth(x):
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    """
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    >>> call_meth(TestMethodOneArg())  # doctest: +ELLIPSIS
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    Traceback (most recent call last):
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    ...
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    TypeError: meth() takes exactly ... argument (0 given)
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    """
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    return x.meth()
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