两个datetime进行时差计算报错：

TypeError: can't subtract offset-naive and offset-aware datetimes

原来是两个相减的时间时区不一致

# -*- coding: utf-8 -*-from datetime import datetimeimport pytz

now1 = datetime.now(tz=pytz.UTC)print(now1)# 零时区的时间 2021-06-11 04:11:39.588770+00:00now2 = datetime.now()print(now2)# 东八区的时间 2021-06-11 12:12:17.431790# print(now2 - now1)# TypeError: can't subtract offset-naive and offset-aware datetimesnow3 = now1.replace(tzinfo=None)print(now3)# 去掉时区之后 2021-06-11 04:15:06.453159print(now2 - now3)# 8:00:00.000061

参考
python datetime offset-aware与offset-navie相互转换