Basic timesince

gistfile1.py

#: -- timesince ----------------------------------------------------------------

def get_plural(value, singular, plural, message=""):
    try:
        return plural if int(value) > 1 else singular
    except:
        return message
    
def get_str_plural(value, singular, plural, message="", tmpl=u"%s %s"):
    return tmpl % (value, get_plural(value, singular, plural))

def timesince(delta, default=None):
    if default is None:
        default = u"justo ahora"
    
    now = datetime.datetime.utcnow()
    diff = now - delta
    years = diff.days/365
    months = diff.days/30
    weeks = diff.days/7
    days = diff.days
    hours = diff.seconds/3600
    minutes = diff.seconds/60
    seconds = diff.seconds
    
    periods = (
        (years, get_str_plural(years, u"año", u"años")),
        (months, get_str_plural(months, u"mes", u"meses")),
        (weeks, get_str_plural(weeks, u"semana", u"semanas")),
        (days, get_str_plural(days, u"día", u"días")),
        (hours, get_str_plural(hours, u"hora", u"horas")),
        (minutes, get_str_plural(minutes, u"minuto", u"minutos")),
        (seconds, get_str_plural(seconds, u"segundo", u"segundos")),)
    
    for period, trans in periods:
        if period:
            return "hace %(period)s" % {"period": trans}
    
    return default