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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 humanize_date(p_datetime):
 """ Returns a relative date string from a datetime object. """

    now = arrow.now()
    _date = now.replace(day=p_datetime.day, month=p_datetime.month, year=p_datetime.year)
    return _date.humanize(now).replace('just now', 'today')