如何将用户输入数据写入外部文本文件?

问题描述 投票:0回答:1

我希望能够获得用户输入的测试分数并写入外部文本文件。然后让应用程序从中读取值并计算平均值。但是,我不确定如何在循环和函数中实现python语法。我试图利用我的资源来更好地了解如何执行此操作,但是在理解python如何处理外部文件时遇到了一些麻烦。另外,在这种情况下,使用append比编写更好?当前语法:

 def testAvgCalculation():
        #Variables
        total = 0
        total_quiz = 0
        while True:
        #User Input and Variable to stop loop
            inpt = input("Enter score: ")
            if inpt.lower()== 'stop':
                break
        #Data Validation
            try:
                if int(inpt) in range(1,101):
                     total += int(inpt)
                     total_quiz += 1
                else:
                    print("Score too small or Big")
            except ValueError:
                print("Not a Number")
        return total, total_quiz


    def displayAverage(total, total_quiz):
        average = total / total_quiz

        print('The Average score is: ', format(average, '.2f'))
        print('You have entered', total_quiz, 'scores')
    #Main Function
    def main():
        total, total_quiz = testAvgCalculation()
        displayAverage(total, total_quiz)
    #Run Main Function
    main()
python python-3.x
1个回答
0
投票

这很骇人,但我尝试使用已经存在的东西。我将原始函数的数据验证部分拆分为一个单独的函数。在main()中,它将返回其值counter(该记录跟踪输入了多少个值)到calculate_average(),然后逐行读取文件,直到counter变为0,这意味着它将要读取单词“ stop”(允许通过if语句中的'and'进行EOF识别),执行计算并返回其值。

def write_file():
    #Variables
    counter = 0

    file = open("Scores.txt", "w")

    while True:
    #User Input and Variable to stop loop
        inpt = input("Enter score: ")
        file.write(inpt + "\n")

        if inpt.lower()== 'stop':
            file.close()
            break
        counter += 1
    return counter

def calculate_average(counter):
    total = 0
    total_quiz = counter
    scores = open("Scores.txt", "r")
    s = ""
    try:
        while counter > 0 and s != 'stop':
            s = int(scores.readline())
            if int(s) in range(1,101):
                 total += int(s)
                 counter -= 1
            else:
                print("Invalid data in file.")
    except ValueError:
        print("Invalid data found")
    return total, total_quiz

def displayAverage(total, total_quiz):
    average = total / total_quiz

    print('The Average score is: ', format(average, '.2f'))
    print('You have entered', total_quiz, 'scores')
#Main Function
def main():
    total, total_quiz = calculate_average(write_file())
    displayAverage(total, total_quiz)
#Run Main Function
main()

注意:该文件最初是在写模式下创建的,该模式每次都会覆盖该文件,因此您不需要新的文件。如果您想保留一条记录,您可能希望将其更改为追加,尽管您需要管理从旧输入中提取适当的行。

一点都不漂亮,但应该让您了解如何实现自己的目标。

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