从3d侦听器在python电报bot中发送消息的最佳做法

Question

我有一个执行例行程序的自定义代码，如果出现问题，我想在Telegram中向自己发送一条消息。就我而言，我将python-telegram-bot库与apscheduler及其侦听器一起使用，可以捕获某些事件。我想出了这样的工作代码，但是我的问题是：是否可以使它更好，即不使用全局变量？这样做是为了克服侦听器不接受bot发送消息所需的参数的问题。

from apscheduler.schedulers.background import BackgroundScheduler
from apscheduler.events import EVENT_JOB_EXECUTED, EVENT_JOB_ERROR
from telegram.ext import Updater, CommandHandler
import copy
import my_custom_library

saved_update = None

def my_listener(event): # not related with bot
    if event.exception:
        if saved_update is not None:
            alert(saved_update, 'Scheduler threw event.exception.') # should have bot related args
    else:
        record = event.retval # get returned value from my_custom_library.repetitive_function
        try:
            processed_record = my_custom_library.my_unsafe_business_logic(record) # something might go wrong here
            my_custom_library.add_to_db(processed_record) # and here
        except Exception as e:
            if saved_update is not None:
                alert(saved_update, e) # should have bot related args

def start(update, context):
    global saved_update
    saved_update = copy.deepcopy(update) # this is what I don't like
    update.message.reply_text('You have subscribed for notifications.')

def alert(update, reason):
    update.message.reply_text('Something went wrong: {}'.format(reason))

def main():
    scheduler = BackgroundScheduler()
    scheduler.add_listener(my_listener, EVENT_JOB_EXECUTED | EVENT_JOB_ERROR)
    scheduler.add_job(my_custom_library.repetitive_function, args=(my_args,), trigger='interval', minutes=1)
    scheduler.start()

    # bot
    updater = Updater(TOKEN, use_context=True)
    dp = updater.dispatcher
    dp.add_handler(CommandHandler("start", callback=start))
    updater.start_polling()
    updater.idle()


if __name__ == '__main__':
    main()

Answer 1

Telegram Bot API非常简单，您刚刚可以向该URL发送HTTP GET请求：https://api.telegram.org/bot_token_/sendMessage?chat_id=123&text=Hello%20World！

只需与Botfather创建一个机器人并向Bot发送消息。使用Botfather指定的令牌和以下URL：https://api.telegram.org/bot_token_/getUpdates

您可以获取发送到Bot和chat_id的消息。

最简单的方法是使用请求模块，并将更新程序的输出作为文本参数发送到第一个URL。