[issue1831] ctypes.Structure constructor arguments

[Armin Rigo]

Armin Rigo added the comment:

The pure Python implementation we just wrote in PyPy is:

    for name, arg in zip(names, args):
        if name in kwds:
            raise TypeError("duplicate value for argument %r" % (
                name,))
        self.__setattr__(name, arg)
    for name, arg in kwds.items():
        self.__setattr__(name, arg)

It's the same logic as in _ctypes.c:Struct_init(), where you can add the
C equivalent of "if name in kwds" after getting the name.

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keywords: +easy

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