辅助功能不起作用

Question

我的代码的show_list 函数不起作用。我收到一条消息，指出 'multiples' 未定义，但我无法确定问题。有人可以对我做错了什么进行审查和建议。

def main():
    input1 = int(input("enter the low integer: "))
    input2 = int(input("enter the high integer: "))
    input3 = int(input("enter the integer for the multiples: "))

    show_multiples(input1, input2, input3)

    print ("List was created")


 def show_multiples(input1, input2, input3):

    num_range = range(input2, input1, -1)
    multiples = []

    for num in num_range:
        if num % input3 == 0:
            multiples.append(num)
            return multiples


    show_list(multiples)

def show_list(multiples):

    elem = len(multiples)
    average = sum(multiples) / elem
    num_range = range(input2, input1, -1)

    print ("the list has", elem, "elements.")

    for num in num_range:
        if num % input3 == 0:
        print (num, end=" ")

    print ("Average of multiples is  ", average)



main()

Answer 1

在定义函数show_list之前调用show_list(multiples)

将你的 main 函数放在你的代码末尾并调用 main() 来运行它：

def main():

    input1 = int(input("enter the low integer: "))
    input2 = int(input("enter the high integer: "))
    input3 = int(input("enter the integer for the multiples: "))

    show_multiples(input1, input2, input3)

print ("List was created")
main()

仅调用 show_list(multiples) 将其移至定义 show_list 的下方

不过你会遇到更多问题：

def show_list(multiples):
    elem = len(multiples)
    average = elem / sum(multiples)
    print ("the list has", elem, "elements.")
    # num_range not defined only exists in show_multiples and input3 is also not accessable
    for num in num_range:
        if num % input3 == 0: 
            multiples.append(num)
            print (num)

不完全确定你想要什么，但我想这会让你更接近：

input1 = int(input("enter the low integer: "))
input2 = int(input("enter the high integer: "))
input3 = int(input("enter the integer for the multiples: "))
num_range = range(input2, input1, -1)

def show_multiples():
    multiples = []
    for num in num_range:
        if num % input3 == 0:
            multiples.append(num)
    return multiples

def show_list():
    multiples = show_multiples()
    elem = len(multiples)
    average = elem / sum(multiples)
    print ("the list has", elem, "elements.")
    for num in num_range:
        if num % input3 == 0:
            multiples.append(num)
        print (num)

show_list()

Answer 2

mutliples 不在全局范围内定义，仅在 show_multiples() 范围内定义

你可能想做的是在全局范围内，改变

show_multiples(input1, input2, input3)

到

multiples = show_multiples(input1, input2, input3)