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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def create_point(self, x, y):
 """Create an ECDSA point on the SECP256k1 curve with the given coords. :param x: The x coordinate on the curve :type x: long :param y: The y coodinate on the curve :type y: long """

        if (not isinstance(x, six.integer_types) or
                not isinstance(y, six.integer_types)):
            raise ValueError("The coordinates must be longs.")
        return _ECDSA_Point(SECP256k1.curve, x, y)