正則表達式和csv |輸出更可讀

Question

我有一個文本，其中包含有關恐怖襲擊的不同新聞文章。每篇文章都以html標籤開頭（<p>Advertisement），我想從每篇文章中提取一個具體信息：在恐怖襲擊中受傷的人數。

這是文本文件的樣本，以及如何將物品分開：

[<p>Advertisement , By MILAN SCHREUER and  ALISSA J. RUBIN OCT. 5, 2016 
, BRUSSELS — A man wounded 2 police officers with a knife in Brussels around noon on Wednesday in what the authorities called 「a potential terrorist attack.」 , The two officers were attacked on the Boulevard Lambermont.....] 
[<p>Advertisement ,, By KAREEM FAHIM and MOHAMAD FAHIM ABED JUNE 30, 2016 
, At least 33 people were killed and 25 were injured when the Taliban bombed buses carrying police cadets on the outskirts of Kabul, Afghanistan, on Thursday. , KABUL, Afghanistan — Taliban insurgents bombed a convoy of buses carrying police cadets on the outskirts of Kabul, the Afghan capital, on Thursday, killing at least 33 people, including four civilians, according to government officials and the United Nations. , During a year...] 

這是到目前爲止我的代碼：

text_open = open("News_cleaned_definitive.csv") 
text_read = text_open.read() 
splitted = text.read.split("<p>") 
pattern= ("wounded (\d+)|(\d+) were wounded|(\d+) were injured") 
for article in splitted: 
    result = re.findall(pattern,article) 

，我得到的輸出是：

[] 
[] 
[] 
[('', '40', '')] 
[('', '150', '')] 
[('94', '', '')] 

我想使輸出更具可讀性，然後將其另存爲csv文件：

article_1,0 
article_2,0 
article_3,40 
article_3,150 
article_3,94 

有關如何使其更具可讀性的任何建議？

Answer 1

我改寫了你的循環像這樣與csv寫合併，因爲你要求它：

使用 enumerate

和受害者人數的文章

import csv 

with open ("wounded.csv","w",newline="") as f: 
    writer = csv.writer(f, delimiter=",") 
    for i,article in enumerate(splitted): 
     result = re.findall(pattern,article) 
     nb_casualties = sum(int(x) for x in result[0] if x) if result else 0 
     row=["article_{}".format(i+1),nb_casualties] 
     writer.writerow(row) 

• GET指數（如果超過1組匹配）使用發生器理解轉換爲整數並將其傳遞到sum，即只有匹配的東西（三元表達式檢查）
• 創建行
• 打印它，或者可選地將其寫爲csv.writer對象的行（每次迭代一行）。