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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 this_year():
 """ Return start and end date of this fiscal year """

        since = TODAY
        while since.month != 3 or since.day != 1:
            since -= delta(days=1)
        until = since + delta(years=1)
        return Date(since), Date(until)