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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 plot(self, dimension):
 """ Plot barcode using matplotlib. """

        import matplotlib.pyplot as plt
        life_lines = self.get_life_lines(dimension)
        x, y = zip(*life_lines)
        plt.scatter(x, y)

        plt.xlabel("Birth")
        plt.ylabel("Death")

        if self.max_life is not None:
            plt.xlim([0, self.max_life])

        plt.title("Persistence Homology Dimension {}".format(dimension))

        #TODO: remove this
        plt.show()