Python 我怎样才能结束这个函数呢

我有一个函数，我认为它有语法错误，因为我没有正确地结束它 我想问题是我没有命令结束这场战争 def get_input：因此函数没有结束，并告诉我main语法无效的错误

 def main():
    pennies = get_input("Enter pennies : ")
    nickels = get_input("Enter nickels : ")
    dimes = get_input("Enter dimes : ")
    quarters = get_input("Enter quarters : ")

    print("You entered : ")
    print("\tPennies  : " , pennies)
    print("\tNickels  : " , nickels)
    print("\tDimes    : " , dimes)
    print("\tQuarters : " , quarters)


    total_value = get_total(pennies, nickels, dimes, quarters)
    dollars = get_dollars(pennies, nickels, dimes, quarters)
    left_over_cents = get_left_over_cents(pennies, nickels, dimes, quarters)

    print("Total = $", total_value, sep="")
    print("You have", dollars, "dollars and", left_over_cents, "cent(s)")

def get_input():
   currency = 0
   while currency < 0:
    print('ERROR: Money cannot be negative.')
    currency = int(input("Enter correct values")



main()

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get_输入的最后一行缺少一个右括号

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currency=IntInpunter正确值缺少括号。无需“结束”函数。当缩进与def函数处于同一级别或更低级别时，python就会“结束”缩进。像这样的问题不应该有一个体面的答案。

currency = int(input("Enter correct values"))
#                                           ^ here