Question

我对这一切都很陌生，现在我正试图让两个函数执行和打印，但我似乎无法掌握它：

import datetime  

def get_date(prompt):
    while True:
        user_input = raw_input(prompt)  
        try:

            user_date = datetime.datetime.strptime(user_input, "%m-%d")
            break
        except Exception as e:
            print "There was an error:", e
            print "Please enter a date"
    return user_date.date()

def checkNight(date):
    date = datetime.strptime('2011-'+date, '%Y-%m-%d').strftime('$A')

birthday = get_date("Please enter your birthday (MM-DD): ")
another_date = get_date("Please enter another date (MM-DD): ")

if birthday > another_date:
    print "Your friend's birthday comes first!"
    print checkNight(date)

elif birthday < another_date:
    print "Your birthday comes first!"
    print checkNight(date)

else:  
    print "You and your friend can celebrate together."

函数get_date需要能够检查日期是否有5个字符并允许拆分为任何内容。如果有人输入“02-29”，它会将其视为“02-28”。 checkNight需要能够检查生日早期的哪个晚上。

以下是一些例子：

Please enter your birthday (MM-DD): 11-25
Please enter a friend's birthday (MM-DD): 03-05
Your friend's birthday comes first!
Great!  The party is on Saturday, a weekend night.

Please enter your birthday (MM-DD): 03-02
Please enter a friend's birthday (MM-DD): 03-02
You and your friend can celebrate together!
Too bad!  The party is on Wednesday, a school night.

Please enter your birthday (MM-DD): 11-25
Please enter a friend's birthday (MM-DD): 12-01
Your birthday comes first!
Great!  The party is on Friday, a weekend night.

Answer 1

一个错误是由于在没有定义变量“date”的情况下调用checkNight(date)。
datetime.strptime应该阅读datetime.datetime.strptime。
字符串与同一行（'2011-'+date）中日期的串联也可能导致错误。
checkNight(date)函数未返回任何内容
等

也许这更接近你想要的东西：

import datetime  

def get_date(prompt):
    while True:
        user_input = raw_input(prompt)  
        try:
            user_date = datetime.datetime.strptime(user_input, "%m-%d")
            user_date = user_date.replace(year=2011)
            break
        except Exception as e:
            print "There was an error:", e
            print "Please enter a date"
    return user_date

def checkNight(date):
    return date.strftime('%A')

birthday = get_date("Please enter your birthday (MM-DD): ")
another_date = get_date("Please enter another date (MM-DD): ")

if birthday > another_date:
    print "Your friend's birthday comes first!"
    print checkNight(another_date)

elif birthday < another_date:
    print "Your birthday comes first!"
    print checkNight(birthday)

else:  
    print "You and your friend can celebrate together."

请注意，由于我在用户输入后立即更改了2011年，我可以在checkNight()更简单地提取星期几。

如何让这两个函数在Python中同时工作？

1 个答案: