python中的最后一个else子句不起作用[重复]

Question

当我运行该程序并将性别输入为其他任何内容而不是男性或女性时，该程序无法按预期运行。我挣扎了一天，想不通。另外，我怎样才能在调用后放置该函数并仍然使程序运行？我读过一个 main 函数，但不知道如何用它修改代码。

from sys import exit
birthdays = {'Alice': 'April 1', 'Bob': 'Dec 12', 'Carol': 'Mar 4'}

def dateOfBirth():
    bday = raw_input("> ")
    birthdays[name] = bday
    print "Database records updated."
    print "The number of records is now " + str(len(birthdays)) + "."
    print birthday`enter code here`s
    exit(0)

while True:
    print "Enter a name: (blank to quit)"
    name = raw_input("> ")

    if name == '':
        exit(0)

    if name in birthdays:
        print birthdays[name] + " is the birthday of " + name + "."
        exit(0)

    else:
        print "I do not have the birthday information for " + name + "."
        print " What is the sex?"
        gender = raw_input("> ")
        if gender == 'male':
            print "What is his birthday?"
            dateOfBirth()
        elif gender == 'female' or 'Female':
            print "What is her birthday?"
            dateOfBirth()
        else:
            print " The gender is not recognised. Anyway we will continue." 
            dateOfBirth()

Answer 1

改变这个：

elif gender == 'female' or 'Female':

到这里：

elif gender in ('female', 'Female'):

或者我会建议：

elif gender.lower()=='female':

你有什么

elif gender == 'female' or 'Female':

本质上是如果性别是女性，或者如果字符串“Female”是非空的，则为else。无论gender 的值是多少，这始终是正确的。