I have tried this
elif command == 'bold':
telegram_bot.sendMessage (chat_id, str("*bold*"), reply_markup=markup)
But it is replying *bold*
instead of bold
You need to provide a parse_mode
Parameter (parse_mode="Markdown").
Or else you will not see any markdown style.
sendMessage(chat_id, "*this text is bold*", parse_mode= 'Markdown')
See
https://telepot.readthedocs.io/en/latest/reference.html#telepot.Bot.sendMessage