如何從文本文件中的任何位置提取域？

Question

這裏是我到目前爲止已經試過：

import re 

with open('text.txt', 'r') as fh: 
    re.findall(r'^[a-z0-9]([a-z0-9-]+\.){1,}[a-z0-9]+\Z"',fh.readline()) 
print(p) 

我想從這個文件中提取的域或網址：File link
我想知道我怎麼能做到這一點使用正則表達式的方法。
請建議。

Answer 1

上述文件的每一行看起來都非常像JSON編碼字典。
所以它是json模塊一個很好的例子：

import json 

with open("text.txt", "r") as fh: 
    domains = [] 
    for l in fh.readlines(): 
     d = json.loads(l) 
     domains.append(d["name"]) 
     # some url domains are located in `value` key for the records which have "type":"cname" 
     if (d["type"] == "cname"): domains.append(d["value"]) 

print(domains) 

輸出：

['mail.callfieldcompanion.com', 'reseauocoz.cluster007.ovh.net', 'cluster007.ovh.net', 'ghs.googlehosted.com', 'googlehosted.l.googleusercontent.com', 'isutility.web9.hubspot.com', 'a1049.b.akamai.net', 'plato.mx25.net'] 

---

如果輸入文件包含一行用下面的辦法：

import json, re 

with open("text.txt", "r") as fh: 
    domains = [] 
    # emulating the list of dictionaries 
    line = "[" + re.sub(r'\}\s*\{', '},{',fh.read()) + "]" 
    l = json.loads(line) 
    for d in l: 
     domains.append(d["name"]) 
     # some url domains are located in `value` key for the records which have "type":"cname" 
     if (d["type"] == "cname"): domains.append(d["value"]) 

print(domains)