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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 day_crumb(date):
 """ Crumb for a day. """

    year = date.strftime('%Y')
    month = date.strftime('%m')
    day = date.strftime('%d')
    return Crumb(day, reverse('zinnia:entry_archive_day',
                              args=[year, month, day]))