利用python實現防撤回，對方撤回的訊息可在自己的微信檔案傳輸助手中檢視。
如果想變成可執行檔案放在電腦中執行，可用pyinstaller將此程式打包成exe檔案。

pyinstaller 檔名.py -F

執行程式後，訊息防撤回就啟動了。

程式完整程式碼

# -*-encoding:utf-8-*-
import os
import re
import shutil
import time
import itchat
from itchat.content import *

# 說明：可以撤回的有文字文字、語音、視訊、圖片、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 = {}

# 檔案儲存臨時目錄
rev_tmp_dir = r"G:\python程式碼\微信\撤回到檔案助手"
if not os.path.exists(rev_tmp_dir): os.mkdir(rev_tmp_dir)

# 表情有一個問題 | 接受資訊和接受note的msg_id不一致 巧合解決方案
face_bug = None

# 將接收到的訊息存放在字典中，當接收到新訊息時對字典中超時的訊息進行清理 | 不接受不具有撤回功能的資訊
# [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
    # 獲取的是本地時間戳並格式化本地時間戳 e: 2017-04-21 21:30:08
    msg_time_rec = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
    # 訊息ID
    msg_id = msg['MsgId']
    # 訊息時間
 

    msg_time = msg['CreateTime']
    # 訊息傳送人暱稱 | 這裡也可以使用RemarkName備註　但是自己或者沒有備註的人為None
    msg_from = (itchat.search_friends(userName=msg['FromUserName']))["NickName"]
    # 訊息內容
    msg_content = None
    # 分享的連結
    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']
        # 儲存檔案
        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"緯度->" + x.__str__() + " 經度->" + 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通知類訊息，判斷是不是撤回並進行相應操作
@itchat.msg_register([NOTE])
def send_msg_helper(msg):
    global face_bug
    if re.search(r"\<\!\[CDATA\[.*撤回了一條訊息\]\]\>", msg['Content']) is not None:
        # 獲取訊息的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 = "告訴你一個祕密~" + "\n" \
                       + old_msg.get('msg_from') + " 撤回了 " + old_msg.get("msg_type") + " 訊息" + "\n" \
                       + old_msg.get('msg_time_rec') + "\n" \
                       + "撤回了什麼 ⇣" + "\n" \
                       + r"" + old_msg.get('msg_content')
            # 如果是分享存在連結
            if old_msg['msg_type'] == "Sharing": msg_body += "\n就是這個連結➣ " + old_msg.get('msg_share_url')

            # 將撤回訊息傳送到檔案助手
            itchat.send(msg_body, toUserName='filehelper')
            # 有檔案的話也要將檔案傳送回去
            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 = '@[email protected]%s' % (rev_tmp_dir + old_msg['msg_content'])
                itchat.send(msg=file, toUserName='filehelper')
                os.remove(rev_tmp_dir + old_msg['msg_content'])
            # 刪除字典舊訊息
            msg_dict.pop(old_msg_id)

if __name__ == '__main__':
    itchat.auto_login()
    itchat.get_QR
    itchat.run()