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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 write_long(self, n, pack=Struct('>I').pack):
 """ Write an integer as an unsigned 32-bit value. """

        if 0 <= n <= 0xFFFFFFFF:
            self._output_buffer.extend(pack(n))
        else:
            raise ValueError('Long %d out of range 0..0xFFFFFFFF', n)
        return self