human_timedelta.py

def plural(n, word, suffix='s'):
    show_suffix = n % 10 == 1 and n % 100 != 11
    return '%d %s%s' % (n, word, '' if show_suffix else suffix)

# @register.filter
def human_timedelta(delta, precision=2):
    units = ['year', 'month', 'day', 'hour', 'minute']
    unit_delta = [getattr(delta, unit + 's'), unit for unit in units]
    terms = [plural(n, unit) for n, unit in units if n > 0]
    terms = terms[:precision]
    if len(terms) > 1:
        return ' and '.join([', '.join(terms[:-1]), terms[-1]])
    else:
        return