I'm trying to follow the API documentation for listenbrainz, specifically the validate-token GET request. But I can't get it to work. I tried searching for other issues about the call but couldn't find any.

I'm attaching a .py file that contains an example of the code I'm trying. Running that script always produces:

{'code': 400, 'error': 'You need to provide an Authorization token.'}

Am I making a silly syntax error somewhere? I tried making small modifications on the examples from the docs to minimize areas where I might make a silly mistake, but I can't get this to work.