为什么我在 python 中打印今天的日期时出现这样的错误？

Question

这是我导入的库和代码_

import time
import datetime
from datetime import datetime
exp_list = data['records']['expiryDates']
exp_date = exp_list[1]
exp_date = datetime.strptime(exp_date, "%d %b %Y") # Convert the type date object into datetime format
today = datetime.date.today() #Today's date
delta = exp_date - today
print(delta.days)

当我试图运行这段代码时，我得到了这样的错误_

39 print(exp_date)
40 
---> 41 today = datetime.date.today() #Today's date
42 delta = exp_date - today
43 print(delta.days)
AttributeError: 'method_descriptor' object has no attribute 'today'

Answer 1

如果您喜欢使用datetime.date.today()，只需导入内置的datetime模块。例如

import datetime
datetime.date.today()
# datetime.date(2022, 5, 16)

或者

from datetime import date
date.today()
# datetime.date(2022, 5, 16)

Answer 2

import datetime
today = datetime.datetime.today() # 16 May 2022
exp_date = datetime.datetime(2022, 5, 28, 9, 56) # 28 May 2022
delta = exp_date - today
print(delta.days) #12

Answer 3

from datetime import datetime
today = datetime.today() #Today's date
print('today: ', today)
exp_date = datetime.strptime('2022-05-30',"%Y-%m-%d")
print('exp_date: ', exp_date)
diff = exp_date-today
print('diff: ', diff)

>> today:  2022-05-17 08:50:09.706947
>> exp_date:  2022-05-30 00:00:00
>> diff:  12 days, 15:09:50.293053