helpers.py 文件源码

def timestamp_from_string(str):
    print(str)
    if (str.startswith( 'last ', 0, 5 )):
        # sample queries: 1m; 1m,2s; 1d,2h,3m,4s
        query = Timeseries_query(str.split('last ')[1])
        diff = datetime.timedelta(seconds=query.s, minutes=query.m, hours=query.h, days=query.d)
        return utcnow() - diff

    return iso8601.parse_date(str)