Python实现文件数据去重与正则提取实战

Evan

发布时间：2026-10-13| 3人浏览过

原创

本文介绍利用Python进行文件读写、正则表达式提取及集合去重的完整流程。通过示例代码展示如何遍历源文件，使用re模块匹配特定字段，并借助set数据结构实现高效去重，最终将唯一结果写入目标文件。

具体实现逻辑如下所示：

# -*- coding:utf-8 -*-
 
from datetime import datetime
import re
 
 
def Main():
 sourcr_dir = '/data/u_lx_data/fudan/muying/muying_11yue_all.txt'
 target_dir = '/data/u_lx_data/fudan/muying/python/uid_regular_get.txt'
 
 uset = set() #去重
 
 print("开始。。。。。")
 print(datetime.now().strftime('%Y-%m-%d %H:%M:%S'))
 
 with open(target_dir, 'w+') as f_write:
  with open(sourcr_dir, 'r') as f_scorce:
   for line in f_scorce:
   line = line.strip().split("\t")
   # 宝宝树
   if line[2] == 'babytree.com':
    uidList = re.findall(r'.*NL=u%02(u\d+)', line[3], re.I)
    if uidList:
     # 去重代码
     if uidList[0] not in uset:
      f_write.write(uidList[0] + "\n")
      uset.add(uidList[0])
      print("宝宝树已完成")
 
   # 柚宝宝
   elif line[2] == 'youzibuy.com':
    if line[4].find("yunqi.youzibuy.com/tae_top_notify") != -1:
     uidList = re.findall(r'.*myuid=(\d+)', line[4], re.I)
     if uidList:
      if uidList[0] not in uset:
       f_write.write(uidList[0] + "\n")
       uset.add(uidList[0])
       print("柚宝宝已完成")
 
   # 妈妈帮
   elif line[2] == 'mmbang.com':
    uidList = re.findall(r'.*uid=(\d+)', line[3], re.I)
    if uidList:
     if uidList[0] not in uset:
      f_write.write(uidList[0] + "\n")
      uset.add(uidList[0])
      print("妈妈帮已完成")
 
   # 妈妈网
   elif line[2] == 'mama.cn':
    if line[4].find("mapi.mama.cn/feed/users/show") != -1:
     uidList = re.findall(r'.*friend_uid=(\d+)', line[4], re.I)
     if uidList:
      if uidList[0] not in uset:
       f_write.write(uidList[0] + "\n")
       uset.add(uidList[0])
    if line[4].find("mamaquan/mmq_thread") != -1:
     uidList = re.findall(r'.*uid=(\d+)', line[4], re.I)
     if uidList:
      if uidList[0] not in uset:
       f_write.write(uidList[0] + "\n")
       uset.add(uidList[0])
       print("妈妈网已完成")
 
   # 育儿网
   elif line[2] == 'ci123.com':
    uidList = re.findall(r'.*ci123js=([a-zA-Z]+\d+)', line[3], re.I)
    if uidList:
     if uidList[0] not in uset:
      f_write.write(uidList[0] + "\n")
      uset.add(uidList[0])
      print("育儿网已完成")
 
 print("完成。。。。。")
 print(datetime.now().strftime('%Y-%m-%d %H:%M:%S'))
if __name__ == "__main__":
 Main()

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