Telethon how to determine if it is a channel or a group and can I write in it?

Question

Python

When receiving a list of all dialogs, Telethon divides them into three types channel, chat, user how can I determine what kind of dialogue a channel or group is and how to determine if I can write in them, for example, if I am banned in a group

Answer 1

from telethon.tl.functions.channels import JoinChannelRequest

client(CheckChatInviteRequest(hash)).chat # приватная ссылка
client.get_entity(name) # публичная