Telebot username = None?

Question

Python

I use pyTelegrambotApi , In general, in the logic of my bot, I need to use the username of the user, I add new users to the sqlite database and take their username, via message.from_user.username, but once in a while, new users come and save their chat id, but username becomes None, why does this happen, these people do not have a username or it is closed for display and my bot does not see it, or what can be here?

Answer 1

I think that users simply do not set username, so it's better for you to save both first_name and last_name in the database