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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 iso_day_to_weekday(d):
 """ Returns the weekday's name given a ISO weekday number; "today" if today is the same weekday. """

    if int(d) == utils.get_now().isoweekday():
        return _("today")
    for w in WEEKDAYS:
        if w[0] == int(d):
            return w[1]