python 日期 週的使用

import datetime

from_date = (datetime.date.today()-datetime.timedelta(days=1)).strftime('%Y-%m-%d')

#週的第一天

#python星期定義為一到日:0~6

#日期寫法:datetime.datetime(2020, 5, 11)

today = datetime.date.today()

#週的第幾天(以0起算)

week_days = (today.weekday()+1) % 7

week_start = today - datetime.timedelta(days=week_days)

print(week_start)

delta = datetime.timedelta(days=7)

MFG_DAY = week_start - delta * 10

for i in range(0,11):

    print((MFG_DAY + delta * i).strftime('%Y/%m/%d'),"第",(MFG_DAY + delta * i).isocalendar()[1],"週")