如何檢查，如果今天是星期一在Python

Question

我怎麼會寫，說的聲明：

If today is Monday, then run this function. 

我的想法是：

if datetime.now().day == Monday: 
    run_report() 

但我知道這是不是做的正確方法它。我將如何正確地做到這一點？

Answer 1

您可以使用date.weekday()這樣的：

from datetime import date 

if date.today().weekday() == 0: 
    run_report() 

Answer 2

import datetime as dt 

dt.date.today().isoweekday() == 1 # 1 = Monday, 2 = Tues, etc. 

Answer 3

from datetime import datetime 

# Print True just when is Monday. 
print(datetime.now().weekday() == 0) 

Answer 4

兩個datetime.date和datetime.datetime 對象都有一個today方法分別返回Date和Datetime對象。

其中都有weekday和isoweekday方法。從星期一= 0 weekday計數，而從週一= 1 isoweekday計數：

from datetime import date, datetime 
if date.today().weekday() == 0: 
    # it is Monday 
if datetime.today().isoweekday() == 1: 
    # it is Monday 

見documentation