Python停车率

Question

def cal_parking_fee (parking_duration):
    if parking_duration< 60:
        fee = 2.5
    else:
        fee = 1.80 + 2.50
    return(fee)

hours = int(input("Enter minutes "))
total_fee = cal_parking_fee(hours)
print(total_fee)

嗨，我正在尝试练习python编程，但我对这个特定问题感到困惑。它说要编写/定义一个名为cal_parking_fee的函数，该函数需要在其中输入一个参数parking_duration 分钟，然后根据时长和停车费率退还应付费用。率是停车的第一个小时为2.50美元，此后每30分钟停车为1.80美元。我似乎无法使我的代码每30分钟就能使用一次。

Answer 1

def cal_parking_fee (parking_duration):
    duration_mins = parking_duration 
    # duration_mins = parking_duration * 60
    if duration_mins < 60:
        fee = 2.5

    else:
        duration = duration_mins - 60
        fee = 2.5
        while duration > 0:
            duration = duration - 30 
            fee = fee + 1.80
    return(fee)

hours = int(input("Enter hours "))
total_fee = cal_parking_fee(hours)
print(total_fee)

Answer 2

这是另一种方法

def cal_parking_fee (parking_duration):
    fee = 2.5
    if parking_duration > 60:
        # Here I subtract 2 because the 1st two 30 minutes
        # have a fixed fee of 2.5 that we've already set
        if (parking_duration / 30 - 2) == 0:
            periods_to_pay = 1
        else:
            periods_to_pay = (parking_duration / 30 - 2)
        fee += periods_to_pay * 1.8 
    return(fee)

hours = int(input("Enter minutes "))
total_fee = cal_parking_fee(hours)
print(total_fee)