使用Python telebot库开发Telegram Bot时部分功能失效的原因排查

你的Telegram Bot代码存在几个关键错误，直接导致message_handler、reply_to和infinity_polling无法正常工作，具体问题和修复方法如下：

1. infinity_polling调用参数错误 #

bot.infinity_polling(5)的写法不符合pyTelegramBotAPI的参数规范，当前版本中infinity_polling的位置参数并非超时时间，必须显式指定参数名：

# 错误写法
bot.infinity_polling(5)

# 正确写法
bot.infinity_polling(timeout=5, none_stop=True)

timeout用于设置请求超时时长，none_stop=True保证bot在网络波动后自动重连。

2. 全局消息处理器的参数与文本提取错误 #

全局处理器函数javab的参数应该是message对象，你错误地将其当作文本处理，且直接把整个对象转成字符串，导致永远无法匹配用户输入（转成字符串后是类似<telebot.types.Message object at 0x...>的内容）：

# 错误写法
def javab(in_text):
    user_mess = str(in_text).lower()

# 正确写法
def javab(message):
    # 先判断是否为文本消息，避免非文本消息触发报错
    if not message.text:
        return
    user_mess = message.text.lower()

3. reply_to的参数错误 #

bot.reply_to的第一个参数必须是message对象，你错误地传入了处理后的文本user_mess，导致无法正确定位回复对象：

# 错误写法
bot.reply_to(user_mess, "hi bro wtf do u want")

# 正确写法
bot.reply_to(message, "hi bro wtf do u want")

4. 重复函数名（潜在问题） #

两个命令处理器都使用send_welcome作为函数名，虽然语法上允许，但会降低代码可读性，建议改为不同命名：

# 错误写法
@bot.message_handler(commands=['start']) 
def send_welcome(message): 
    ...

@bot.message_handler(commands=['help']) 
def send_welcome(message): 
    ...

# 正确写法
@bot.message_handler(commands=['start']) 
def send_start_welcome(message): 
    bot.reply_to(message, "Howdy, how are you doing?") 

@bot.message_handler(commands=['help']) 
def send_help_info(message): 
    bot.reply_to(message, "you can ask me datetime and hi to me and ask who am i and how am i") 

5. /stop命令处理错误 #

if user_mess in ('/stop'):的写法错误，单元素元组必须加逗号（否则会被识别为字符串）；且return 'ok good bye'无法停止bot，需要调用bot.stop_polling()：

# 错误写法
if user_mess in ('/stop'):
    return 'ok good bye'

# 正确写法
if user_mess == '/stop':
    bot.reply_to(message, "ok good bye")
    bot.stop_polling()

修复后的完整代码 #

import telebot  
import constant 
from datetime import datetime

BOT_TOKEN = constant.api_key
bot = telebot.TeleBot(BOT_TOKEN)


@bot.message_handler(commands=['start']) 
def send_start_welcome(message): 
    bot.reply_to(message, "Howdy, how are you doing?") 

@bot.message_handler(commands=['help']) 
def send_help_info(message): 
    bot.reply_to(message, "you can ask me datetime and hi to me and ask who am i and how am i") 

@bot.message_handler(func=lambda message: True)
def javab(message):
    if not message.text:
        return
    
    user_mess = message.text.lower()

    if user_mess in ('hi','hello','sup'):
        bot.reply_to(message, "hi bro wtf do u want")
    elif user_mess in ('time','what time is it?','time?'):
        now = datetime.now()
        date_time = now.strftime("%d/%m/%Y,%H:%M:%S")
        bot.reply_to(message, str(date_time)) 
    elif user_mess in ('who are u','who are you?','you?'):
        bot.reply_to(message, 'non of your business , im hironside')
    elif user_mess in ('how are u?','how are you?'):
        bot.reply_to(message, 'im good')
    elif user_mess == '/stop':
        bot.reply_to(message, 'ok good bye')
        bot.stop_polling()
    else:
         bot.reply_to(message, 'go fly a kite')

print('bot is running ......')

bot.infinity_polling(timeout=5, none_stop=True)

内容的提问来源于stack exchange，提问作者hamid ironside