运行python代码时出错，datetime和strtime typ的属性错误

Question

我要完成一个项目：

Help determine how much time someone has left to meet a deadline

• Ask a user to enter the deadline for their project
• Tell them how many days they have to complete the project
• For extra credit, give them the answer as a combination of weeks & days (Hint: you will need some of the math functions from the module on numeric values)

现在我碰到一堵砖墙：

1. 我的笔记本电脑上有python2.7.12，导师正在使用microsoftvisualstudio2013教cpython。

2. 当我运行我的代码，它编译，但一旦我输入用户数据，它给我下面显示的错误。

我的代码：

import datetime
currentday=datetime.date.today()

#set variable to recieve deadline for project
deadLine = 0
deadLine = raw_input('when is the deadline for your project? (dd/mm/YYYY) ')
deadLine=datetime.dateime.strptime(deadLine, '%d/%m/%Y').date()
daysLeft= deadLine-currentday


print 'Number of days left for your project is : '
print daysLeft

给出的错误：

when is the deadline for your project? (dd/mm/YYYY) 21/10/2016
Traceback (most recent call last):
  File "C:\Users\Oluwaseun Okungbowa\Desktop\Video editing and python programming\projectdeadline.py", line 7, in <module>
    deadLine=datetime.dateime.strptime(deadLine, '%d/%m/%Y').date()
AttributeError: 'module' object has no attribute 'dateime'

1. 当我试图运行tutors代码时，我遇到了另一个错误（这些错误也是在接受用户输入之后给出的）。你知道吗

导师代码：

#import the datetime class
import datetime

#declare and initialize variables
strDeadline = ""
totalNbrDays = 0
nbrWeeks = 0
nbrDays = 0

#Get Today's date
currentDate = datetime.date.today()

#Ask the user for the date of their deadline
strDeadline = input("Please enter the date of your deadline (mm/dd/yyyy): ")

deadline = datetime.datetime.strptime(strDeadline,"%m/%d/%Y").date()

#Calculate number of days between the two dates
totalNbrDays = deadline - currentDate

#For extra credit calculate results in weeks & days

nbrWeeks = totalNbrDays.days / 7

#The modulo will return the remainder of the division
#which will tell us how many days are left 
nbrDays = totalNbrDays.days%7

#display the result to the user

print("You have %d weeks" %nbrWeeks + " and %d days " %nbrDays + "until your   deadline.")

给出的错误：

Please enter the date of your deadline (mm/dd/yyyy): 10/21/2016

Traceback (most recent call last):
  File "C:\Users\Oluwaseun Okungbowa\Desktop\Video editing and python programming\projectdeadlineteachers.py", line 16, in <module>
    deadline = datetime.datetime.strptime(strDeadline,"%m/%d/%Y").date()
TypeError: strptime() argument 1 must be string, not int

请帮助我理解为什么我在运行这两个程序时同时出现这两个错误，以及我必须做些什么来纠正它。你知道吗

Answer 1

Install python3 so that you and your tutor are on the same page.

However, if you do decide to stick with python 2.7, this will fix your problem.

你的问题就在这条线上

#Ask the user for the date of their deadline
strDeadline = input("Please enter the date of your deadline (mm/dd/yyyy): ")

这里有一个例子来说明我的意思

>>> input()
5
5
>>> input()
10/2
5
>>> input()
10/2/2016
0

python认为日期是整数的算术除法。将input()更改为raw_input()以接受字符串。你知道吗

即

strDeadline = raw_input("Please enter the date of your deadline (mm/dd/yyyy): ")

Answer 2

第一个错误是拼写错误（datetime不是dateime，检查一下你自己，尽量不要问stackoverflow简单的问题）。 第二个错误：

请参阅： about datetime.strptime()

strtime的第一个参数应该是string（error就是这么说的，errors可以帮助您更好地学习） 因此，请提出第一个论点 输入是

str(deadLine)#converting deadLine to string

编辑： 我忽略了逻辑错误，因为strDeadLine是int。 问题的出现是因为IDLE执行操作（在本例中是在将其提供给代码之前进行除法）。使用Shell或cmd时不会出现这种情况。我同意我之前所说的，最好的学习方法不是堆积如山，而是自己去尝试。 感谢马蒂恩·皮特斯的评论。你知道吗