在Python中讀取csv文件

Question

我在閱讀csv文件時遇到問題。

csv格式： 下面是CSV文件中的兩個條目格式：

"1", "one", "<long class=\"like\" >\ 
    <short class=\"over\">\ 
    </short> 
    </long>", "3", "<long class=\"like\" >\ 
    <short class=\"over\">\ 
    </short> 
    </long>", "facebook" 
    "2", "two", "<long class=\"like\" >\ 
    <short class=\"over\">\ 
    </short> 
    </long>", "3", "<long class=\"like\" >\ 
    <short class=\"over\">\ 
    </short> 
    </long>", "facebook" 

如何讀取每一行這種CSV文件的？

Answer 1

假設從CSV文件看一些兩個條目象下面這樣：

"1", "one", "<long class=\"like\" ><short class=\"over\"></short></long>", "3", "<long class=\"like\" ><short class=\"over\"></short></long>" "facebook" 
"2", "two", "<long class=\"like\" ><short class=\"over\"></short></long>", "3", "<long class=\"like\" ><short class=\"over\"></short></long>" "facebook" 

考慮使用re.findall()功能：

import re 

with open('test.csv', 'r') as fh: 
    lines = fh.read().split('\n') 
    for l in lines: 
     fields = re.findall(r'^\"(\d+)\", \"(\w+)\", (.+)', l, re.S) 
     a, b, c = fields[0] # unpacking fields 
     print(a, b, c, sep='\t') 

輸出：

1 one "<long class=\"like\" ><short class=\"over\"></short></long>", "3", "<long class=\"like\" ><short class=\"over\"></short></long>" "facebook" 
2 two "<long class=\"like\" ><short class=\"over\"></short></long>", "3", "<long class=\"like\" ><short class=\"over\"></short></long>" "facebook" 

Answer 2

爲什麼不要使用csv包？

你可以閱讀每一行和像你想用它玩，例如：

import csv 
with open('prueba.csv','r') as file: 
    reader = csv.reader(file, delimiter=';') 
    for row in reader: 
     <That you want to do with each row> 

但也許你想要做的另一個不同的事情。