78行Python代码实现现微信撤回消息功能

Python曾经对我说："时日不多，赶紧用Python"。于是看到了一个基于python的微信开源库：itchat，玩了一天，做了一个程序，把私聊撤回的信息可以收集起来并发送到个人微信的文件传输助手，包括：

01 代码实现

# -*-encoding:utf-8-*- import os import re import shutil import time import itchat from itchat.content import * # 说明：可以撤回的有文本文字、语音、视频、图片、位置、名片、分享、附件 # {msg_id:(msg_from,msg_to,msg_time,msg_time_rec,msg_type,msg_content,msg_share_url)} msg_dict = {} # 文件存储临时目录 rev_tmp_dir = "/home/alic/RevDir/" if not os.path.exists(rev_tmp_dir): os.mkdir(rev_tmp_dir) # 表情有一个问题 | 接受信息和接受note的msg_id不一致 巧合解决方案 face_bug = None # 将接收到的消息存放在字典中，当接收到新消息时对字典中超时的消息进行清理 | 不接受不具有撤回功能的信息 # [TEXT, PICTURE, MAP, CARD, SHARING, RECORDING, ATTACHMENT, VIDEO, FRIENDS, NOTE] @itchat.msg_register([TEXT, PICTURE, MAP, CARD, SHARING, RECORDING, ATTACHMENT, VIDEO]) def handler_receive_msg(msg):   global face_bug   # 获取的是本地时间戳并格式化本地时间戳 e: 2017-04-21 21:30:08   msg_time_rec = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())   # 消息ID   msg_id = msg['MsgId']   # 消息时间   msg_time = msg['CreateTime']   # 消息发送人昵称 | 这里也可以使用RemarkName备注　但是自己或者没有备注的人为None   msg_from = (itchat.search_friends(userName=msg['FromUserName']))["NickName"]   # 消息内容   msg_content = None   # 分享的链接   msg_share_url = None   if msg['Type'] == 'Text' /       or msg['Type'] == 'Friends':     msg_content = msg['Text']   elif msg['Type'] == 'Recording' /       or msg['Type'] == 'Attachment' /       or msg['Type'] == 'Video' /       or msg['Type'] == 'Picture':     msg_content = r"" + msg['FileName']     # 保存文件     msg['Text'](rev_tmp_dir + msg['FileName'])   elif msg['Type'] == 'Card':     msg_content = msg['RecommendInfo']['NickName'] + r" 的名片"   elif msg['Type'] == 'Map':     x, y, location = re.search(       "<location x=/"(.*?)/" y=/"(.*?)/".*label=/"(.*?)/".*", msg['OriContent']).group(1, 2, 3)     if location is None:       msg_content = r"纬度->" + x.__str__() + " 经度->" + y.__str__()     else:       msg_content = r"" + location   elif msg['Type'] == 'Sharing':     msg_content = msg['Text']     msg_share_url = msg['Url']   face_bug = msg_content   # 更新字典   msg_dict.update(     {       msg_id: {         "msg_from": msg_from, "msg_time": msg_time, "msg_time_rec": msg_time_rec,         "msg_type": msg["Type"],         "msg_content": msg_content, "msg_share_url": msg_share_url       }     }   ) # 收到note通知类消息，判断是不是撤回并进行相应操作 @itchat.msg_register([NOTE]) def send_msg_helper(msg):   global face_bug   if re.search(r"/</!/[CDATA/[.*撤回了一条消息/]/]/>", msg['Content']) is not None:     # 获取消息的id     old_msg_id = re.search("/<msgid/>(.*?)/<//msgid/>", msg['Content']).group(1)     old_msg = msg_dict.get(old_msg_id, {})     if len(old_msg_id) < 11:       itchat.send_file(rev_tmp_dir + face_bug, toUserName='filehelper')       os.remove(rev_tmp_dir + face_bug)     else:       msg_body = "告诉你一个秘密~" + "/n" /             + old_msg.get('msg_from') + " 撤回了 " + old_msg.get("msg_type") + " 消息" + "/n" /             + old_msg.get('msg_time_rec') + "/n" /             + "撤回了什么 ⇣" + "/n" /             + r"" + old_msg.get('msg_content')       # 如果是分享存在链接       if old_msg['msg_type'] == "Sharing": msg_body += "/n就是这个链接➣ " + old_msg.get('msg_share_url')       # 将撤回消息发送到文件助手       itchat.send(msg_body, toUserName='filehelper')       # 有文件的话也要将文件发送回去       if old_msg["msg_type"] == "Picture" /           or old_msg["msg_type"] == "Recording" /           or old_msg["msg_type"] == "Video" /           or old_msg["msg_type"] == "Attachment":         file = '@fil@%s' % (rev_tmp_dir + old_msg['msg_content'])         itchat.send(msg=file, toUserName='filehelper')         os.remove(rev_tmp_dir + old_msg['msg_content'])       # 删除字典旧消息       msg_dict.pop(old_msg_id) if __name__ == '__main__':   itchat.auto_login(hotReload=True,enableCmdQR=2)   itchat.run()