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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 reset(self):
 """ Clears the `cells` and leaderboards, and sets all corners to `0,0`. """

        self.cells.clear()
        self.leaderboard_names.clear()
        self.leaderboard_groups.clear()
        self.top_left.set(0, 0)
        self.bottom_right.set(0, 0)