is there a way to check if a chat is a group chat? Or at least to find out how many users there are in a group.
Like by checking for the user number, if it is 2, then it is obviously 1-1 (Single), but if it as anything else, it would be a group chat.
The Type property of the chat object will be either chatTypeDialog or chatTypeMultiChat with the latter being a group chat. You can safely ignore the other legacy enumeration values.
Skype4Py Check If Group Chat