Question

这是一个返回旅行费用的Python函数。我无法弄清楚这有什么问题 - 什么都没有被调用。我错过了什么吗？

    def hotel_cost(nights):
        return 140 * nights

    def plane_ride_cost(city):
        if city == "Charlotte":
            return 183
        elif city == "Tampa":
            return 220
        elif city == "Pittsburgh":
            return 222
        elif city == "Los Angeles":
            return 475

    def rental_car_cost(days):
        total_car = days * 40
        if days >= 7:
           total_car -= 50
        elif days >= 3:
            total_car -= 20
        return total_car

    def trip_cost(city, days):
        return rental_car_cost(days) + plane_ride_cost(city) + hotel_cost(days)

print trip_cost("Charlotte", 6)

Answer 1

写

print trip_cost("Charlotte", 6)

您正在调用函数'trip_cost'并获取返回值，但您没有对返回值执行任何操作。要查看输出，请使用print

Answer 2

以下代码适用于我并返回1243：

def hotel_cost(nights):
    return 140 * nights

def plane_ride_cost(city):
    if city == "Charlotte":
        return 183
    elif city == "Tampa":
        return 220
    elif city == "Pittsburgh":
        return 222
    elif city == "Los Angeles":
        return 475

def rental_car_cost(days):
    total_car = days * 40
    if days >= 7:
       total_car -= 50
    elif days >= 3:
        total_car -= 20
    return total_car

def trip_cost(city, days):
    return rental_car_cost(days) + plane_ride_cost(city) + hotel_cost(days)

print(trip_cost("Charlotte", 6))

我刚删除了一些无用的缩进并添加了“打印”

Python - 调用函数

2 个答案: