前言

我可爱的女朋友上了很多微课，每次整理都费心费时，所以决定用itchat写一个脚本程序，能够自动的保存特定群聊中特定发言人的语音，并使用pydub将保存的语音拼接成音频课程。

使用步骤：

1. 在电脑上运行程序:打开命令行，切换到autoRecord.py所在文件夹，然后使用python autoRecord.py
2. 扫描二维码登录；【根据提示信息，有时只用确认登录即可甚至什么都不用做】
3. 输入课程相关信息，按照命令行提示输入：1. 课程名称，用以创建文件夹保存语音文件；2. 群名称；3. 发言人名称；首先输入发言人数量，然后依次输入名称；
4. 命令行提示Start auto replying. 时，就进入自动模式了。只需要在课程结束不需要软件运行时，在手机端的群里面输入结束暗号#END#，电脑程序在拼接音频完成之后，即可在课程文件夹下找到拼接结果文件result.mp3。
5. 如有问题，欢迎来售后。

工作逻辑

通过群名和发言人名找到对应的UserName,然后根据UserName判断语音来源，然后根据类型执行相应的操作。在接收到由本微信号在群里面发出的结束暗号时，对语音进行拼接，然后退出程序【目前退出的型式不够优雅】。

代码

import itchat
import os
from pydub import AudioSegment

@itchat.msg_register([itchat.content.RECORDING, itchat.content.TEXT], isGroupChat=True)
def download(msg):
    global count, GID, UID, SelfID, FolderName
    if msg['FromUserName'] == GID and msg['ActualUserName'] in UID and msg['Type']=='Recording':
        print("Got Audio:#{} From {}".format(count, msg['ActualNickName']))
        msg['Text']('{}/{}.mp3'.format(FolderName,count))
        count += 1
    if  msg['FromUserName'] == SelfID and msg['ToUserName'] in GID and msg['Type']=='Text' and msg['Text'].startswith('#END#'):
        print("Concat Audio.....")
        AudioConcat(count, FolderName)
        print("Exit! Bye Bye!")
        itchat.logout()
        exit(0)

def AudioConcat(count, FolderName):
    if not count:
        return
    result = AudioSegment.from_mp3('{}/0.mp3'.format(FolderName))
    for i in range(1, count):
        result += AudioSegment.from_mp3('{}/{}.mp3'.format(FolderName, i))
    result.export('{}/{}.mp3'.format(FolderName, 'result'), format='mp3')

def GotInfo():
    print('*'*20)
    while True:
        FolderName = input("Please input Course Name:")
        if os.path.exists(FolderName):
            print("Folder Exists! Try another Name!")
        else:
            os.mkdir(FolderName)
            break

    print('*'*20)
    itchat.get_chatrooms(update=True)
    while True:
        GName = input('Please Enter Group Name:')
        G = itchat.search_chatrooms(name=GName)
        if G:
            break
    GID = G[0]['UserName']

    print('*'*20)
    G = itchat.update_chatroom(userName=GID, detailedMember=True)
    MList = G['MemberList']
    UID = []
    Unum = int(input("Please input the num of users to be listened:"))
    print("Input UserName one by one!")
    while len(UID)< Unum:
        UName = input('Please input user name:')
        aUID = 0
        for m in MList:
            # print(m['NickName'], m['RemarkName'])
            if UName in [m['NickName'], m['RemarkName']]:
                aUID = m['UserName']
        if aUID:
            UID.append(aUID)
            print('Added Successfuly:{}'.format(UName))
        else:
            print('Added Failed:{}| Please Check and reinput!'.format(UName))
    print('Listen to @{}@{}'.format(GName, UName))
    SelfID = itchat.get_friends()[0]['UserName']
    return GID, UID, FolderName, SelfID
if __name__ == '__main__':
    itchat.auto_login(hotReload=True)
    count = 0
    GID, UID, FolderName, SelfID = GotInfo()
    itchat.run()