Question

这个问题真的解释了我的问题，尝试编写一个程序，可以分割日期但我一直遇到同样的错误

def date2():
    date = input("Please enter the date in the form of mm/dd/yyyy")
    return date
def month(date):
    month = int(date[0:3])
    return month
def day2(date):
    day = int(date[3:5])
    return day
def year2(date):
    year = int(date[5:])
    return year
def main():
    date2()
    month(date)
    day2(date)
    year2(date)
    print(month + day + year)
main()

Please enter the date in the form of mm/dd/yyyy 12/12/2017
Traceback (most recent call last):
  File "H:\DateWithoutSplit.py", line 19, in <module>
    main()
  File "H:\DateWithoutSplit.py", line 15, in main
    month(date)
NameError: name 'date' is not defined
>>>

Answer 1

def main():
    date = date2()
    ...

归档后，您没有将date变量存储在任何位置

Answer 2

你所尝试的是一种不好的做法，该程序也有其他几个错误。尝试下面的一个，它会给你正确的输出。并尝试学习python strptime和strftime方法。

from datetime import datetime

def main():
   date = raw_input("Please enter the date in the form of mm/dd/yyyy")
   date = datetime.strptime(date, "%m/%d/%Y")
   print(date.month + date.day + date.year)
main()

为什么这会返回我的变量未定义的错误

2 个答案: