使用Python脚本将绝对url替换为相对url的教程

#!/usr/bin/env python#-*- coding:utf-8 -*-### author : cold night# email  : wh_linux@126.com#import pymongoimport refrom StringIO import StringIOconn = pymongo.Connection()db = conn.testdef replace_url():  regex = re.compile(r'([href|src])=["|/']http://.*?(/m/getimg/?.*?)["|/']')  results = db['test'].find()  db_coll = db['test']  def replace(r):    content = r.get('content')    if not content: return    content = StringIO(content)    content.seek(0)    result = StringIO()    for line in content.readlines():      t = regex.sub(r'/1="/2"', line)      result.write(t)    result.seek(0)    content = result.read()    if content:      r['content'] = content    _id = r.get('_id')    db_coll.update({'_id':_id}, r)  results = [replace(i) for i in results]if __name__=="__main__":replace_url()