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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 get_widths_mean_var(self, estimation):
 """Get estimation on the variance of widths' mean Parameters estimation : 1D arrary Either prior of posterior estimation Returns ------- widths_mean_var : 2D array, in shape [K, 1] Estimation on variance of widths' mean """

        widths_mean_var = \
            estimation[self.map_offset[3]:].reshape(self.K, 1)
        return widths_mean_var