Python 程序不会让我只存储用户的最后三个分数

我试图让程序只保存用户的最后三个分数，而不是将所有分数保存到文本文件中

现在看起来是这样的：

if class_number == 0:
    #This will create and open a new text file under the name
    #of the class_tag variable.
    file = open("Class 0" + ".txt", "a")
    #This will write down the user's name and their score
    file.write(str(name) + " scored " + str(score))
    #This will create a new line for each user
    file.write("\n")
    #This will close the file.
    file.close()

import collections

def new3ElementDeque():
   return collections.deque([], 3)

nameTop3 = collections.defaultdict(new3ElementDeque)

with open("Class 0.txt") as f:
    for line in f:
        user, score = line.split(':')
        nameTop3[name].append(score)

student scored 3
student scored 8
student scored 0
student scored 4
student scored 10
student scored 3
student scored 0
student scored 4

student scored 3
student scored 0
student scored 4

我希望它是这样的：

if class_number == 0:
    #This will create and open a new text file under the name
    #of the class_tag variable.
    file = open("Class 0" + ".txt", "a")
    #This will write down the user's name and their score
    file.write(str(name) + " scored " + str(score))
    #This will create a new line for each user
    file.write("\n")
    #This will close the file.
    file.close()

import collections

def new3ElementDeque():
   return collections.deque([], 3)

nameTop3 = collections.defaultdict(new3ElementDeque)

with open("Class 0.txt") as f:
    for line in f:
        user, score = line.split(':')
        nameTop3[name].append(score)

student scored 3
student scored 8
student scored 0
student scored 4
student scored 10
student scored 3
student scored 0
student scored 4

student scored 3
student scored 0
student scored 4

但是，空闲shell声明：

if class_number == 0:
    #This will create and open a new text file under the name
    #of the class_tag variable.
    file = open("Class 0" + ".txt", "a")
    #This will write down the user's name and their score
    file.write(str(name) + " scored " + str(score))
    #This will create a new line for each user
    file.write("\n")
    #This will close the file.
    file.close()

import collections

def new3ElementDeque():
   return collections.deque([], 3)

nameTop3 = collections.defaultdict(new3ElementDeque)

with open("Class 0.txt") as f:
    for line in f:
        user, score = line.split(':')
        nameTop3[name].append(score)

student scored 3
student scored 8
student scored 0
student scored 4
student scored 10
student scored 3
student scored 0
student scored 4

student scored 3
student scored 0
student scored 4

如何让程序存储用户的最后三个分数并将其保存到文本文件中

输入的名称为：

    name, score = line.split(':')
ValueError: need more than 1 value to unpack

---

在

行

中没有“：”，因此当它尝试将其按“：”拆分时，结果只有一个元素，并且您无法分配用户和分数，因为只有一个元素

如果文件中的所有行都像“blah scored x”，则可以将行

user，score=line.split（'：'）

替换为

user，score=line.split（'scored'）

---

在

行中似乎没有“：”，因此当它尝试按“：”进行拆分时，结果只有一个元素，您无法分配
用户
和
分数
，因为只有一个元素。请在
用户，分数=行之前执行
打印行
。拆分（“：”）
，并检查是否没有“：”Julien Spronck，如何使用“打印行”？像这样：“print line user，score=line.split（'scored'）？你能显示输入文件吗？我建议你通读python教程（），我更新了我的代码，它开始工作了，但当我再次这样做时，它就不工作了。出现了：name，score=line.split（'scored'））ValueError：需要超过1个值才能解压文件中并非所有行都像“blah scored x”。在f:

和

中的行的行之间键入
打印行
，score=line.split（'scored'）

，并告诉我们在错误消息出现之前屏幕上打印了什么。在整个程序启动之前，由于'line'，它会显示'invalid syntax'，因为'line'。我不知道您所说的“因为'line'”是什么意思。看看我刚才在回答中发布的代码。。。我不认为这里面有语法错误。。。是你试过的吗？