python 赋值前引用的电报机器人局部变量

Question

我正在尝试编写一个代码，其中将包含与机器人的对话和将导致机器人发送图像的命令，但我总是遇到相同的错误

这些是部分代码。

import logging
logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
                     level=logging.INFO)
logger = logging.getLogger()



from telegram import (ReplyKeyboardMarkup, ReplyKeyboardRemove)
from telegram.ext import (Updater, CommandHandler, MessageHandler, Filters,
                          ConversationHandler)
from telegram.ext import Updater
updater = Updater(token='Token', use_context=True)
dispatcher = updater.dispatcher
from telegram.ext import CommandHandler
import telegram
bot = telegram.Bot('Token')

logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
                    level=logging.INFO)

def sic(update, context):
    chat_id=update.effective_chat.id
    file = r"C:\Users\Yoav\Desktop\sicily_bot\user_photo.jpg"
    bot.send_photo(chat_id, photo=open(file, 'rb'))
    bot.send_photo(chat_id, 'https://bitcoin.org/img/icons/opengraph.png')

def main():
    updater = Updater("Token", use_context=True)
    dp = updater.dispatcher
    conv_handler = ConversationHandler(
        entry_points=[CommandHandler('start', start)],
        
        states={
            LOOKS: [MessageHandler(Filters.regex('^(Mehh|Okay.|Great|Amazing)$'), looks)],

            PHOTO: [MessageHandler(Filters.photo, photo),
                    CommandHandler('skip', skip_photo)],

            EDUCATION: [MessageHandler(Filters.text & ~Filters.command, education),
                       CommandHandler('skip', skip_education)],

            BIO: [MessageHandler(Filters.text & ~Filters.command, bio)]
        },

        fallbacks=[CommandHandler('cancel', cancel)], 
    )
    dp.add_handler(conv_handler)
    dispatcher.add_handler(sic)
    sic = CommandHandler('sic', sic)
    
    updater.start_polling()
    updater.idle()
    
if __name__ == '__main__':
    main()

我总是遇到这个错误：

Traceback (most recent call last):
  File "C:\Users\Yoav\Desktop\sicily_bot\bot_comb.py", line 161, in <module>
    main()
  File "C:\Users\Yoav\Desktop\sicily_bot\bot_comb.py", line 151, in main
    dispatcher.add_handler(sic)
UnboundLocalError: local variable 'sic' referenced before assignment

我该如何解决这个问题？

提前致谢

Answer 1

嗯，你为什么不交换 dispatcher.add_handler 和 sic = CommandHandler 的那一行？

Answer 2

sic = CommandHandler('sic', sic)

您打算使用此行来覆盖 sic 函数吗？

如果你想重写这个函数，你应该将sic标记为一个全局变量： [选项 1]

def main():
    global sic
    ... # same as original

如果这不是您的意图，请不要分配给 sic。我不知道电报库，但我的猜测是 CommandHandler 对象应该传递给 dispatcher.add_handler。这意味着您应该将代码更改为：

[选项 2]

dispatcher.add_handler(CommandHandler('sic', sic))

python 赋值前引用的电报机器人局部变量

python telegram bot local variable referenced before assignment

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