获取周操作

1,通过传入这一年的第几周,获取那一周,周一到周末的日期

 from isoweek import Week
       
monday = Week(int(year), int(week)).monday()   # 当前周的周一

sunday = Week(int(year), int(week)).sunday()   # 当前周的周日

 2,传入时间,获取今天是周几

from datetime import datetime

now = datetime.now()
now.weekday()         
==>  4    # 实际是周5, 数值会比较小一点

3,传入年月日,获取当前是第几周和周几

import datetime

datetime.date(2019,5,24).isocalendar()

==>(2019, 21, 5)           # 年,第几周,星期几