执行单独的、嵌套的if语句是否有效？

Question

我正在研究以下问题：

You are driving a little too fast, and a police officer stops you. Write code to compute the result, encoded as an int value: 0=no ticket, 1=small ticket, 2=big ticket. If speed is 60 or less, the result is 0. If speed is between 61 and 80 inclusive, the result is 1. If speed is 81 or more, the result is 2. Unless it is your birthday -- on that day, your speed can be 5 higher in all cases.

我想出了以下代码：

def caught_speeding(speed, is_birthday):
    if is_birthday == True:
        if speed <= 65:
            return 0
        elif speed <= 85:
            return 1
        else:
            return 2
    else:
        if speed <= 60:
            return 0
        elif speed <= 80:
            return 1
        else:
            return 2

我觉得单独检查每一个都有点低效，或者可以吗？在

Answer 1

你一定喜欢bisect模块。在

def caught_speeding(speed, is_birthday):
    l=[60,80]
    if is_birthday:
        speed-=5
    return bisect.bisect_left(l,speed)