ValueError異常：沒有足夠的數值解壓縮（預計3，拿到1）

Question

I am trying to read a txt file into python and getting the above error. I want to convert each line into 3 columns. The text file looks like this -

1714,Sales,Math 
10070,Research,Science 
1704,Developer,History 
32696,QA,Math 
16421,Marketing,Science 
25925,Sales,History 

我的代碼如下所示：

import pandas as pd 
a=open('/Users/mezbahuddin/Downloads/dept_course.txt') 
b=a.read() 
for line in b: 
    g,h,i=line.strip().split(",",2) 
    print(g[0],h[0],i[0]) 

Anyhelp將不勝感激。謝謝

Answer 1

b=a.read() 
for line in b: 

b不是線的集合。 b是單個字符串。 for line in b:將導致line逐個字符地遍歷b。

要一行一行遍歷文件，請執行for line in a:。