Creating Team Folder via Python SDK

The /2/files/create_folder_v2 endpoint that the files_create_folder_v2 method uses only supports the Dropbox-API-Select-Admin
"Team Admin" mode, meaning: 

The endpoint can access content of team folders but not team member's private files.

Since you're using "as_admin", that's setting the "Dropbox-API-Select-Admin" header, but by default API calls operate in the member's own private folder.

So, if you did intend to create the folder inside the member's own private folder, you should use "as_user", instead of "as_admin".

Alternatively, if you meant to create the folder in the "team space", you should also use "with_path_root" to root the call in the team space. Please refer to the Team Files Guide for information on using that if so.