How to replace value?

Question

Python

I'm working on a telegram bot. For example, if the person does not have a username, then pytelegrambotapi displays the value "None". Is it possible to somehow replace it with, for example, "not available"?

Answer 1

Do it with instructions

@bot.message_handler(commands=['start']) 
def start(message):
    if message.from_user.username == ' ' 
       bot.send_message(message.chat.id, 'у вас нету Username')