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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_historical_standings(date):
 """Return the historical standings file for specified date."""

    try:
        url = STANDINGS_HISTORICAL_URL.format(date.year,
                                              date.strftime('%Y/%m/%d'))
        return urlopen(url)
    except HTTPError:
        ValueError('Could not find standings for that date.')