[lang-ref] ( add_years ) ( python )

def test_add_years():
    def to_date(yyyymmdd):
        return datetime.datetime.strptime(yyyymmdd, r'%Y%m%d').date()

    def add_years(d, years):
        return d.replace(year=d.year + years)

    assert add_years(to_date('20250123'), 3) == to_date('20280123')