Python While循环上的平均时间

我有一个函数，它测量一个人回答乘法和所需的时间，但我希望能够显示用户使用完该函数后所花费的平均时间（在while循环中）。以下是函数：

def withTimer():
    playAgain = "yes"
    correct = 0
    total = 0
    while playAgain == "yes":
        total = total + 1
        random1 = random.choice(tablesUsed)
        random2 = random.randint(1, 12)
        realAnswer = random1 * random2
        start = time.time()
        humanAnswer = int(input("What is the answer to this multiplication sum?\n" + str(random1) + " * " + str(random2) + "\n"))
        if realAnswer == humanAnswer:
            elapsed = round((time.time() - start), 1)
            correct = correct + 1
            score = str(int(correct / total * 100)) + "%"
            if elapsed < 2:
                print("Congratulations, you got it correct in " + str(elapsed) + " seconds!\nThat is a very good time!\nScore: " + score)
            else:
                print("Congratulations, you got it correct in " + str(elapsed) + " seconds!\nNow work on your time.\nScore: " + score)            
        else:
            score = str(int(correct / total * 100)) + "%"
            print("Unforunately, you got this one incorrect, the actual answer was " + str(realAnswer) + ".\nScore: " + score)
        elapsed1 = 
        playAgain = input("Do you wish to play again? (yes or no)\n")
        if playAgain == "yes":
            settings()
        else:
            print("Thank you for practicing your multiplication tables\nwith me\nFinal Score: " + score + "\nAverage Time: " + averageTime)

其中，我在另一个函数中定义了变量

times=[]

，以及

global times

，但这会产生错误：

'NoneType' object has no attribute 'append', line 26

请帮助我尝试并了解发生了什么，以及解决方案

---

提前感谢。

您可以创建一个已用时间列表，然后将所有已用时间相加并除以列表中的项目数来计算平均值，但不需要这样做。只要您保持运行的总时间，平均回答时间将是总时间除以总回答数

以下版本的程序将以这两种方式计算平均值，并显示这两种方式，以显示两种方式的结果相同

import time,random

def withTimer():
    playAgain = "yes"
    correct = 0
    total = 0
    totalTime = 0
    etime = []
    while playAgain[0] == "y":
        total = total + 1
        random1 = random.randint(1, 12)
        random2 = random.randint(1, 12)
        realAnswer = random1 * random2
        start = time.time()
        humanAnswer = int(input("What is the answer to this multiplication sum?\n" + str(random1) + " * " + str(random2) + "\n"))
        if realAnswer == humanAnswer:
            elapsed = round((time.time() - start), 1)
            etime.append(elapsed)
            correct = correct + 1
            score = str(int(correct / total * 100)) + "%"
            if elapsed < 2:
                print("Congratulations, you got it correct in " + str(elapsed) + " seconds!\nThat is a very good time!\nScore: " + score)
            else:
                print("Congratulations, you got it correct in " + str(elapsed) + " seconds!\nNow work on your time.\nScore: " + score)            
        else:
            score = str(int(correct / total * 100)) + "%"
            print("Unforunately, you got this one incorrect, the actual answer was " + str(realAnswer) + ".\nScore: " + score)
        totalTime += elapsed
        playAgain = input("Do you wish to play again? (yes or no)\n")
    averageTime = totalTime / total
    averageTime1 = sum(etime) / len(etime)
    if playAgain[0] != "y":
        print("Thank you for practicing your multiplication tables\nwith me\nFinal Score: " + score + "\nAverage Time: " + str(averageTime) + " AverageTime1 = "  + str(averageTime))


withTimer()

导入时间，随机
def with timer（）：
再次播放=“是”
正确=0
总数=0
总时间=0
时间=[]
再次播放时[0]=“y”：
总计=总计+1
random1=random.randint（1,12）
random2=random.randint（1,12）
realAnswer=random1*random2
开始=时间。时间（）
humanAnswer=int（输入（“这个乘法和的答案是什么？\n”+str（random1）+“*”+str（random2）+“\n”））
如果realAnswer==humanAnswer：
已用时间=轮（（time.time（）-start），1）
附加时间（已用）
正确=正确+1
分数=str（整数（正确/总数*100））+“%”
如果时间小于2：
打印（“祝贺您，您在“+str（已用）+”秒内就搞定了！\n这是一个非常好的时机！\n存储：“+score”）
其他：
打印（“祝贺您，您在“+str（已用）+”秒内答对了！\n现在开始计时。\n存储：“+score”）
其他：
分数=str（整数（正确/总数*100））+“%”
print（“不幸的是，您的答案不正确，实际答案是“+str（realswer）+”\n核心：“+score”）
总时间+=已用时间
playreach=输入（“您希望再次播放吗？（是或否）\n”）
平均时间=总时间/总时间
平均时间1=总和（时间）/长度（时间）
如果再次播放[0]！=“y”：
打印（“感谢您与我一起练习乘法表\n最终分数：“+Score+”\n平均时间：”+str（averageTime）+“AverageTime1=“+str（averageTime））
withTimer（）

我想我可能需要创建一个在“总计”处插入“已用”的列表。我说的对吗？您导入了时间，然后有一个名为time的变量？？你不认为可怜的ickle python可能会有点困惑吗？哦，对不起@vorspring，这个变量实际上被称为

times

，但这可能仍然是个坏名字

import time,random

def withTimer():
    playAgain = "yes"
    correct = 0
    total = 0
    totalTime = 0
    etime = []
    while playAgain[0] == "y":
        total = total + 1
        random1 = random.randint(1, 12)
        random2 = random.randint(1, 12)
        realAnswer = random1 * random2
        start = time.time()
        humanAnswer = int(input("What is the answer to this multiplication sum?\n" + str(random1) + " * " + str(random2) + "\n"))
        if realAnswer == humanAnswer:
            elapsed = round((time.time() - start), 1)
            etime.append(elapsed)
            correct = correct + 1
            score = str(int(correct / total * 100)) + "%"
            if elapsed < 2:
                print("Congratulations, you got it correct in " + str(elapsed) + " seconds!\nThat is a very good time!\nScore: " + score)
            else:
                print("Congratulations, you got it correct in " + str(elapsed) + " seconds!\nNow work on your time.\nScore: " + score)            
        else:
            score = str(int(correct / total * 100)) + "%"
            print("Unforunately, you got this one incorrect, the actual answer was " + str(realAnswer) + ".\nScore: " + score)
        totalTime += elapsed
        playAgain = input("Do you wish to play again? (yes or no)\n")
    averageTime = totalTime / total
    averageTime1 = sum(etime) / len(etime)
    if playAgain[0] != "y":
        print("Thank you for practicing your multiplication tables\nwith me\nFinal Score: " + score + "\nAverage Time: " + str(averageTime) + " AverageTime1 = "  + str(averageTime))


withTimer()