Python 确定环境光照级别的数量

对于这个程序，我正在使用python

max() arg is an empty sequence 

我应该把机器人移动到一个随机的位置，然后把它旋转360度。我必须将所有三个光传感器的15个读数分配到三个不同的列表中

max() arg is an empty sequence 

然后我必须计算每个传感器的平均光照值，然后确定每个传感器的最大值和最小值

max() arg is an empty sequence 

然后，我必须计算并显示所有三个传感器的平均光照值，并让它公布周围的平均光照值，以及它是否太亮或太暗

max() arg is an empty sequence 

我相信我已经完成了所有这些，但我的程序不起作用。例如，我的机器人在随机位置移动，然后旋转360度，但是程序停止了，我不知道为什么

max() arg is an empty sequence 

出现一个错误，显示：

max() arg is an empty sequence 

如果有人能帮我找出我做错了什么，那就太好了！ 非常感谢你

max() arg is an empty sequence 

这是我的节目：

max() arg is an empty sequence 

from myro import *
init("simulator")

def pressC():
    entry = " "
    while(entry != "c"):
        entry = raw_input("Press c to continue: ")

def movement():
    rightSensor = []
    centerSensor = []
    leftSensor = []
    return rightSensor
    return centerSensor
    return leftSensor

    for index in range(1,15):
        rightSensor.append(getLight("right"))
        centerSensor.append(getLight("center"))
        leftSensor.append(getLight("left"))

def average():
    rightSensor = []
    centerSensor = []
    leftSensor = []
    sumRight = 0
    sumCenter = 0
    sumLeft = 0

    for index in range(len(rightSensor)):
        sumRight = sumRight + rightSensor[index]
        averageRight = sumRight / 15

    for index in range(len(centerSensor)):
        sumCenter = sumCenter + centerSensor[index]
        averageCenter = sumCenter / 15
        while averageCenter > 100:
            speak("Its too dark. I need light")
        else:
            speak("Its so bright")

    for index in range(len(leftSensor)):
        sumLeft = sumLeft + leftSensor[index]
        averageLeft = sumLeft / 15

    max(rightSensor)
    min(rightSensor)
    max(centerSensor)
    min(centerSensor)
    max(leftSensor)
    min(leftSensor)

    print "Left Avg: " + str(averageLeft), "Max: " + str(leftSensor), "Min: " + str(leftSensor)
    print "Center Avg: " + str(averageCenter), "Max: " + str(centerSensor), "Min: " + str(centerSensor)
    print "Right Avg: " + str(averageRight), "Max: " + str(rightSensor), "Min: " + str(rightSensor)


def main():
    pressC()
    forward(1,1)
    rotate(1)
    wait(7)
    stop()
    movement()
    average()

main()

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这是代码的相关部分：

max() arg is an empty sequence 

def average():
    rightSensor = []
    (do stuff that does not change rightSensor)
    max(rightSensor)

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难怪它是空的。

您甚至对错误发生在哪一行保密？伙计，你真的不想得到帮助…很抱歉，但这是完全错误所说的：回溯（最近一次调用最后一次）：文件“C:\Users\\Desktop\”，第67行，在-toplevel-main（）文件“C:\Users\”，第65行，在main average（）文件“C:\Users\”，第46行，在average max（rightSensor）ValueError:max（）arg是一个空序列三个连续返回语句的含义是什么？只有第一个将被执行。我想我必须返回它们以将它们用作值。难道没有必要吗？

max() arg is an empty sequence