Python 如何对.txt文件进行排序

我做了一个算术测验，问你十个问题和你所在的班级。用户将输入该名称，然后输入1、2或3。然后它会问用户十个问题，但最后它会将用户的姓名和分数保存到一个名为ClassScore、Class2Score或Class3Score的.txt文件中

下面是我的代码，显示算术测验：

import time
import math 
import random
print("Title:Arithmetic Quiz")
print("*************************************************************")

print("This program will ask you to complete the arithmetic quiz.")
print("The program has 10 questions. You will recieve feedback after.")
print("____________________________________________________________"
while True:
    UserName = input("What is your name?:")
    if not UserName.isalpha():
        print("Error!Please enter your name using letters. ") 
        continue
    else:
        break
ClassSelection= input("Please enter what Class you are in?:1, 2 or 3")
ClassChosen=0
while ClassChosen==0:
    if ClassSelection=="1":
        ClassChosen=1
    elif ClassSelection=="2":
        ClassChosen=1
    elif ClassSelection=="3":
        ClassChosen=1
    else:
        print("You must write 1, 2, or 3.")
        ClassSelection=input("Enter the class you are in")


print(UserName," welcome to the Arithmetic Quiz.")
print("____________________________________________")
print("The quiz will begin in 3 seconds")
time.sleep(2)
for i in range(0,3):
    print (3 - i)
    time.sleep(1)
print("Begin!")
print("*****************************************")


#___________________________________________________________________________________________________________________________________  
RecentStudent= [0,0,0]
def MathsQuiz():
    score=0
    for questionNum in range(10):
        Num1= random.randint (1, 10)
        Num2= random.randint (1, 10)
        Symbol = ["+","-","*"]
        Operation = random.choice(Symbol)
        RealAnswer= int(eval(str(Num1)+Operation+str(Num2)))

        print("Please give an answer for:", Num1, Operation, Num2)    
        UserAnswer = int(input("Enter your answer here:"))
        if UserAnswer == RealAnswer:
            score = score + 1
            print("You are correct! :D")
            print("_______________________________________________")
        else:
            print("You are incorrect! :( ")
            print("The answer was", RealAnswer)
            print("________________________________________________")
    print()
    print("__________________________________________________")
    print("Thank you for completing the quiz!")
    print("Your Score is loading")
    import time
    time.sleep(2)
    print(UserName,"In this test you achieved",score,"/10")
    print()
    del RecentStudent[0]
    RecentStudent.append(score)
    print("Your three most recent scores are:",RecentStudent)
    print("********************************************************")
def Resit1():
    Resit1=input("Do you want to resit the test? Yes or No?:")


    if Resit1== "Yes" or Resit1=="yes":
        MathsQuiz()


def Resit2():
    Resit2=input("Do you want to resit the test? Yes or No?:")


    if Resit2== "Yes" or Resit2=="yes":
        MathsQuiz()
        print("Quiz Finished")


#____________________________________________________________________________________________________________________________________________________________        
MathsQuiz()
Resit1()
Resit2()
if ClassSelection=="1":
    Class1 = []
    Class1.append("Student: ")

    Class1.append(UserName)
    Class1.append("Latest 3 Scores: ")
    Class1.append(RecentStudent)


    file = open("Class1Scores.txt", 'a')


    file.write(str(Class1))


    file.write("\n")
    file.close()

elif ClassSelection=="2":
    Class2=[]
    Class2.append("Student: ")

    Class2.append(UserName)
    Class2.append("Latest 3 Scores: ")
    Class2.append(RecentStudent)


    file = open("Class2Scores.txt", 'a')

    file.write(str(Class2))



    file.write("\n")
    file.close()


elif ClassSelection==3:
    Class3 = []
    Class3.append("Student: ")
    Class3.append(UserName)
    Class3.append("Latest 3 Scores: ")
    Class3.append(RecentStudent)


    file = open("Class3Scores.txt", 'a')


    file.write(str(Class3))

    file.write("\n")
    file.close()

分数保存在文件中后，我想做的是询问用户他们希望看到什么数据。用户可以看到的数据是最高的结果、最低的结果、平均分数、按字母顺序排列的名称以及每个类的最高分数。我使用虚拟值将用户的最后三个分数以1,2,10的格式保存到文件中

下面是我将分数保存到.txt文件时输出到该文件的示例：

['Student: ', 'clive', 'Latest 3 Scores: ', [0, 0, 0]]

---

这是它保存的格式，因为我不知道如何将结果排序到新程序分类器的数据类型中

如果要将数据持久保存在文件中，则需要选择能够序列化数据的文件格式。python最常见的两种是

json

和

pickle

import json

data = ['name', 'John Doe', 'scores', [1,2,3]]

# Serializes data and write it to file
with open('/path/to/file.txt', 'w') as f:

    json.dump(data, f)

# Read the data back in
with open('/path/to/file.txt', 'r') as f:
    read_data = json.load(f)

print(read_data)
# ['name', 'John Doe', 'scores', [1,2,3]]

---

您可能想阅读，任何需要阅读您的代码的人都会为此感谢您。正如现在写的，你的代码几乎是不可读的。对一个文件进行排序非常困难。你有没有想过使用sqlite？如果您不想这样做，最简单的方法是将整个文件读入内存，并用合适的键将其传递给排序function@e4c5你能帮我做这件事吗？嘿，这段代码会去哪里？这是什么类型的？