Question

我有一个功能可以测量某人回答乘法和所需的时间，但我希望能够显示用户完成使用后所需的平均时间功能（它在while循环中）。这是功能：

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)

我已经写了averageTime变量来显示我想要显示的平均时间。
我试过这个：

if realAnswer == humanAnswer:
            elapsed = round((time.time() - start), 1)
            times = times.append(elapsed)

我在另一个函数中定义了变量times = []和global times，但这会产生错误：

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

请帮助我尝试了解正在发生的事情和解决方案！提前谢谢。

Answer 1

您可以创建经过时间的列表，然后通过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，但是您不需要。只要您保持经过时间的总计，平均回答时间就是总经过时间除以答案总数。

以下版本的程序以这两种方式计算平均值，并显示两者以显示结果相同。

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()

While循环的平均时间

1 个答案: