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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 combine_with(self, depth_im):
 """ Replaces all zeros in the source depth image with the value of a different depth image Parameters depth_im : :obj:`DepthImage` depth image to combine with Returns ------- :obj:`DepthImage` the combined depth image """

        new_data = self.data.copy()
        # replace zero pixels
        new_data[new_data == 0] = depth_im.data[new_data == 0]
        # take closest pixel
        new_data[(new_data > depth_im.data) & (depth_im.data > 0)] = depth_im.data[(
            new_data > depth_im.data) & (depth_im.data > 0)]
        return DepthImage(new_data, frame=self.frame)