为什么我总是被告知我的变量在 function 之外？ Python

Question

这是更大的东西的一部分，但我的问题是 shell 一直告诉我““返回”功能异常”。 我试过删除缩进并移动它，但它不会 go 消失。 代码：

def worklodge_cost():
    if workshop == 1:  # what number the user puts in determines what values they get out of this workshop section
        price = 1000
        amtdays = 3
    elif workshop == 2:
        price = 800
        amtdays = 3
    elif workshop == 3:
        price = 1600
        amtdays = 3
    elif workshop == 4:
        price = 500
        amtdays = 1
    # print("This is your registration fee $", price)

    if location == 1:  # what number the user puts in determines the price of their lodging
        lodgeprice = 150
    elif location == 2:
        lodgeprice = 225
    elif location == 3:
        lodgeprice = 175
    elif location == 4:
        lodgeprice = 300
        totalodging = amtdays * lodgeprice  # taking the amount of days for the workshop and multiplying it by the lodging price of the location
        return totalodging
main()

Answer 1

这是因为return是放在function外面的。return需要放在function的INSIDE里面。return通常放在function的末尾，见下。

def lodgeprice(location, amtdays):
    if location == 1: #what number the user puts in determines the price of their lodging
        lodgeprice = 150
    elif location == 2:
        lodgeprice = 225
    elif location == 3:
        lodgeprice = 175
    elif location == 4:
        lodgeprice = 300
    totalodging = amtdays * lodgeprice #taking the amount of days for the workshop and multiplying it by the lodging price of the location
    return totalodging

一般来说，您的代码似乎需要进行重大重构。 考虑返回值在您的代码中有什么用处，是否有必要？ 我还建议将您的代码分解为函数，这样通常更容易处理。