utils/timehelper.py
蕴含一下性能：
- 获取最小的 utc 工夫，datetime 类型，实用于 mysql 的所有常见，不论是 datime 还是 stamptime
- 获取以后的 utc 工夫，datetime 类型
from datetime import datetime, timedelta, timezonedef get_min_utc_timestamp() -> datetime: return (datetime(year=1970, month=1, day=1) + timedelta(seconds=1)).replace(tzinfo=timezone.utc)def get_utc_now_timestamp() -> datetime: """ https://blog.csdn.net/ball4022/article/details/101670024 """ return datetime.utcnow().replace(tzinfo=timezone.utc)def timedelta_seconds(start_time: datetime, end_time: datetime = None) -> int: """ 返回两个工夫相差的秒数 """ if not end_time: end_time = get_utc_now_timestamp() return int((end_time - start_time).total_seconds())