Please help with an example of sending a photo to an arbitrary chat. Here's what I found myself

client.MessagesSendMedia(&telegram.MessagesSendMediaParams{
	Silent:       false,
	Background:   false,
	ClearDraft:   false,
	Peer:         &telegram.InputPeerUser{ // user data
		UserId:     2121212,
		AccessHash: 212121211221,
	},
	ReplyToMsgId: 0,
	Media:        ???, 
	Message:    

It’s been a while but telegram now sends the user locale as part of the message. I always thought of doing this but thought it would not be useful... until I started receiving comments from admins from foreign groups in which users might have trouble with the default language of GB (English).

In the TDLIB update event, there is only the 'sender_user_id' field and no other user identification. Currently, there is no way to get first and last names using python-telegram.
As far as I know, to get that information the client should use getUserFullInfo() method. Please, add it.