Python获得最近的星期五的日期

要将一周中的某一天作为int，我们使用datetime.datetime.today().weekday()；要从datetime中减去days，我们使用datetime.today() - timedelta(days=days_to_subtract)，现在我们可以制作一个字典，将一周中的某一天与要减去的天数联系起来，并使用该字典进行减法：

from datetime import datetime, timedelta
d = {0:3,1:4,2:5,3:6,4:0,5:1,6:2}
lastfriday = datetime.today()-timedelta(days=d[datetime.today().weekday()])

也可以让他自动计算字典值

from datetime import date
from datetime import timedelta
 
today = date.today()
 
offset = (today.weekday() - 4) % 7
friday = today - timedelta(days=offset)
print(friday)

来源

https://stackoverflow.com/questions/68477122/how-to-get-last-fridays-date-with-python

https://www.pythonprogramming.in/how-to-get-last-friday-in-python.html