cython

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# Copied from cdef_multiple_inheritance.pyx
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# but with __slots__ and without __dict__
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cdef class CBase(object):
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    cdef int a
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    cdef c_method(self):
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        return "CBase"
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    cpdef cpdef_method(self):
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        return "CBase"
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class PyBase(object):
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    __slots__ = []
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    def py_method(self):
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        return "PyBase"
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cdef class Both(CBase, PyBase):
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    """
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    >>> b = Both()
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    >>> b.py_method()
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    'PyBase'
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    >>> b.cp_method()
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    'Both'
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    >>> b.call_c_method()
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    'Both'
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    >>> isinstance(b, CBase)
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    True
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    >>> isinstance(b, PyBase)
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    True
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    """
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    cdef c_method(self):
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        return "Both"
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    cpdef cp_method(self):
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        return "Both"
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    def call_c_method(self):
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        return self.c_method()
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cdef class BothSub(Both):
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    """
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    >>> b = BothSub()
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    >>> b.py_method()
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    'PyBase'
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    >>> b.cp_method()
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    'Both'
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    >>> b.call_c_method()
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    'Both'
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    """
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    pass
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