Question

我已经分配了一项任务来记录数学测验的学生成绩

以下是我的任务：

老师想要使用学生参加这些测验的结果来记录他们的表现。系统应存储＆gt;每个学生的最后三个分数。

每次运行我的代码时，都没有数据添加到csv文件中，也就是＆＃34;状态＆＃34;文本文件保持为0，因此即使添加数据，分数也不会更新，而是附加到行

以下是我的代码：

import csv
import os

name = input("enter your name: ")
classroom_num = input("enter your classroom number: ")
score = 5
print ("%s, you scored %d/10 questions correctly"%(name,score)) 
status = open ("state.txt","w") #Every time program is run +1 is added, so that column 1-3 are updated
with open ("state.txt","r") as f:
    state = f.read()
    if os.stat("state.txt").st_size == 0:
        status.write ("0")

state_ints = [ int(x) for x in state.split() ] #converts into int
addone = 1
if state_ints == 3: #If program is run more than 3 times the value in text file reset to 0
    state_ints = 0
    status.write (state_ints)
with open("Classroom {}.csv".format(classroom_num),"a+") as f:
    rows = csv.reader(f)
    for row in rows:
        if row in rows in row[0] != (name) in row: #Checks if name exists in file (if so name isn't appended to column)
            state_ints.append(addone) #Adds one everytime program is run so that score can be replaced for row 1-3
            status.write (state_ints)
            name_row = (row [0])
            name_row.append(name)
            score_row = (row (state_ints))
            score_row.append(score)
        else:
            state_ints.append(addone)
            status.write (state_ints)
            score_row = (row [state_ints])
            score_row.append(score)
status.close()

Answer 1

在代码的第7行中，您以书写模式打开文件： status = open ("state.txt","w") 因此，该文件的内容（如果存在）将被删除。因此，第8-9行中的读取操作将无法读取任何内容：

with open ("state.txt","r") as f:
    state = f.read()

您可以阅读文件，进行更新，然后再将数据上传回文件。

Answer 2

在写入文件之前，您正在重置state_ints。写入文件后执行此操作。或者你总是将0写入文件。

将输出写入csv文件时出现问题

2 个答案: