Question

这是我的代码＆amp;这是我的错误：AttributeError：type object＆＃39; datetime.datetime＆＃39;没有属性＆＃39; strptime

#Trying to calculate how many days until a project is due for
import datetime
project = input('When is your project due for Please specify mm/dd/yyyy ')

deadline = datetime.datetime.strptime(project, '%m/%d/Y').date()

days = project - deadline

print(days)

print(days.days)

提前感谢#KOH

Answer 1

看起来你需要这样的东西：

import datetime
project = input('When is your project due for. Please specify mm/dd/yyyy ')

deadline = datetime.datetime.strptime(project, '%m/%d/%Y').date()

delta = deadline - datetime.datetime.now().date()

print(delta.days)

使用Python3，datetime没有错误：

>>> datetime.datetime.strptime("08/11/2015", "%m/%d/%Y").date()
datetime.date(2015, 8, 11)

Answer 2

我不确定你为什么会得到那个AttributeError，但我想我们在评论中解决了这个问题。您也收到错误，因为您的格式字符串缺少%。一旦你解决了这个问题，你就会收到一条错误消息，指出你无法从date中减去str。

即使修复了所有错误，代码所做的也不是你想要做的。看起来你试图从用户自己减去用户提供的日期，但我猜你想从用户提供的日期中减去今天的日期，以便获得用户提供日期之前的天数。

这是固定代码，其中包含一些格式和其他更改。

from datetime import datetime

deadline_str = input('When is your project due? Specify mm/dd/yyyy: ')

deadline = datetime.strptime(deadline_str, '%m/%d/%Y').date()

days_till_deadline = (deadline - datetime.today().date()).days

print("{0} days till the project is due.".format(days_till_deadline))

Answer 3

所以这是我编写的代码，它有效......

#todays date programme
import datetime
currentDate = datetime.date.today()
#currentDate is date which is converted to string with variable current in the format dd/mm/yyyy
current = datetime.datetime.strftime(currentDate, '%d/%m/%Y')
#input statements
userInput = input('Please enter your project deadline (dd/mm/yyyy)\n')
print()
##prints...
print("Today's Date is "+current)
print()
print("Your project deadline is " + userInput)

#userInput is a string which is converted to date with variable Input
Input = datetime.datetime.strptime(userInput, "%d/%m/%Y").date()
##Calculating remaining days
remainingDays = Input - currentDate
remainingDays = remainingDays.days
print()
print('The days remaining for deadline are '+str(remainingDays)+' days')

Answer 4

我想是这样的。因为在这里我们必须先导入日期时间，所以我们需要处理日期。然后，我们必须获取当前日期，以便能够获得项目截止日期。

import datetime

current_date = datetime.datetime.now() 

user = input('Enter the days left for your project: ') 
deadline = datetime.datetime.strptime(user, '%d%m%Y').date() 

days_left = deadline - current_date.date() 

print(days_left.days)

需要帮助这个简单的Python代码

4 个答案: