作用域问题，原始输入变量将不可用

Question

我不知道如何更改代码，以便在脚本运行时重置deposit变量，因为如果我首先输入pennies，deposit变量将在每次调用函数时存储该值，因此按下不同的硬币（如nickels），它将不会执行其“elif”语句，而是转到pennies。我该怎么解决这个问题？你知道吗

pennies_total = 0
nickels_total = 0
dimes_toal = 0
quarters_total = 0
keeprunning = True


def deposit():
    global pennies_total
    global nickels_total
    global dimes_total
    global quarters_total
    deposit = (raw_input("What would you like to deposit? (P for pennies, N for nickels, D for dimes, Q for quarters): ")).upper()
    if deposit == 'P' or 'PENNIES':
        pennies_instance = raw_input("How many pennies would you like to deposit?: ")
        pennies_total = int(pennies_instance) + pennies_total
        print "There are %s pennies in your bank"% (pennies_total)

    elif deposit == 'N' or 'NICKELS':    
        nickels_instance = raw_input("How many nickels would you like to deposit?: ")
        # create if non-integer is input for all classes of coins
        nickels_total = int(nickels_instance) + nickels_total
        print "There are %s nickels in your bank"% (nickels_total)

    while keeprunning == True:
        exc = raw_input("Would you like to deposit or withdraw money? (D for deposit, W   for    withdraw, Q for Quit): ").upper()
        if exc == "D" or "DEPOSIT":
            deposit()

Answer 1

两个变化：

1）更改中的变量名：

deposit = (raw_input("What would you like to deposit? (P for pennies, N for nickels, D for dimes, Q for quarters): ")).upper()

其他的名字，比如：面额

2）更换：

if deposit == 'P' or 'PENNIES':

签署人：

if (denomination == 'P') or (denomination == 'PENNIES'):

对“all”if和“elif”条件进行此更改。你知道吗

Answer 2

以下表达式：

deposit == 'P' or 'PENNIES'

不是你想的那样。不管deposit的值是多少，这个表达式将始终是真的。因此，硬币支路总是被拿走，而镍支路从不被拿走。你知道吗

请尝试：

deposit == 'P' or deposit == 'PENNIES'

或者

deposit in ('P', 'PENNIES')

其他的if语句也是如此。你知道吗