send messages to a team's chat using graph api on python

lastramarcelo94 - Could you please let us know what exactly you want to achiever here? We are not quite clear about the ask here. 

If you want to send message to a particular group chat, you can use below API:
Send message in a chat - Microsoft Graph v1.0 | Microsoft Learn
This API can't create a new chat; you must use the list chats method to retrieve the ID of an existing chat before you can create a chat message.

Choose a Microsoft Graph authentication provider - Microsoft Graph | Microsoft Learn

Thanks, 

Prasad Das

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