How in django to send a telegram message to a user by his login?

Question

Django

I have already created a bot and the user who needs to send a message has already clicked Start. My bot only knows the username of the user who wants to receive the message. In what ways can a bot send a message to a user using python django?

Answer 1

And why does your bot know only the login (as I understand it, you call username that way) of the user?
Your bot also knows the user id, you can and should also send a message using it.
The user may not have a username, but an id is required.