Python - 在菜单中重用用户输入

Question

怎么才能最好地实现这个功能 - 在菜单中重复使用用户输入呢？下面是我的示例代码：

def input():
    user = raw_input('user: ')
    passwd = getpass.getpass('passwd: ')
    return (user,passwd)

def function1():
    user, passwd, vcenter = input() 
do something

def function2():
    user, passwd, vcenter = input() 
do something

def function3():
    user, passwd, vcenter = input()     
    do something

def main():
    while True:
        if choice == 1:
            function1()
        elif choice == 2:
            function2()
        elif choice == 3:
            function3()
        else:
            print 'Choose from the options only!'
        break

Answer 1

我明白你的意思了，你是想在while循环中只用一次input()，而不是在每个函数里都重复调用它。如果是这样的话，我建议你可以试试这个方法：

def input():
    user = raw_input('user: ')
    passwd = getpass.getpass('passwd: ')
    return (user,passwd)

def function1(param):
    user, passwd = param
    do something

def function2(param):
    user, passwd = param
    do something

def function3(param):
    user, passwd = param
    do something

def main():
    while True:
        if choice in [1,2,3]:
            param = input() 
        if choice == 1:
            function1(param)
        elif choice == 2:
            function2(param)
        elif choice == 3:
            function3(param)
        else:
            print 'Choose from the options only (1, 2, 3): '
        break

希望这对你有帮助。