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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 translate_x(self, d):
 """Translate mesh for x-direction :param float d: Amount to translate """

        mat = numpy.array([
            [1, 0, 0, 0],
            [0, 1, 0, 0],
            [0, 0, 1, 0],
            [d, 0, 0, 1]
        ])
        self.vectors = self.vectors.dot(mat)
        return self