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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 away_win_percentage(self):
 """ Returns a ``float`` of the percentage of games the away team has won after the conclusion of the game. Percentage ranges from 0-1. """

        try:
            result = float(self.away_wins) / \
                     float(self.away_wins + self.away_losses)
            return round(result, 3)
        except ZeroDivisionError:
            return 0.0