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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 _assert_safe_casting(cls, data, subarr):
 """ Ensure incoming data can be represented as ints. """

        if not issubclass(data.dtype.type, np.signedinteger):
            if not np.array_equal(data, subarr):
                raise TypeError('Unsafe NumPy casting, you must '
                                'explicitly cast')