itchat是一个开源的微信个人号接口，使用python调用微信变得非常简单。简单是用itchat代码即可构建一个基于微信的即时通讯，更不错的体现在于方便扩展个人微信的在其他平台的更多通讯功能。

安装

pip3 install itchat

hello word

import itchat
itchat.auto_login(hotReload=True)
itchat.send('Hello AlicFeng', toUserName='filehelper')

捕获撤回消息

# -*-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~" + "" 
                      + old_msg.get('msg_from') + " 撤回了 " + old_msg.get("msg_type") + " 消息" + "" 
                      + old_msg.get('msg_time_rec') + "" 
                      + "撤回了什么 ⇣" + "" 
                      + r"" + old_msg.get('msg_content')
           # 如果是分享存在链接
           if old_msg['msg_type'] == "Sharing": msg_body += "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()

笔记来自公众号“黑客技术与 *** 安全“，作者：AlicFeng