test.py

from rauth import OAuth2Service
import json


def auth(client_id, secret, scope):
    global service, redirect_uri
    service = OAuth2Service(
                client_id=client_id,
                client_secret=secret,
                authorize_url="https://musicbrainz.org/oauth2/authorize",
                access_token_url="https://musicbrainz.org/oauth2/token",
                base_url="https://musicbrainz.org/"
    )

    redirect_uri = "urn:ietf:wg:oauth:2.0:oob"
    params = {'response_type': 'code',
              'scope': scope,
              'redirect_uri': redirect_uri}
    url = service.get_authorize_url(**params)
    return url


def get_info(code):
    session = service.get_auth_session(data={'code': code, 'redirect_uri': redirect_uri,
                                             'grant_type': 'authorization_code'},
                                            decoder=lambda data: json.loads(data.decode('utf-8')))
    try:
        return session.get('oauth2/userinfo').json()
    except:
        return "Failed to fetch user profile"

print(auth("qLYLK0LlrhifkgXq0N-J4w", "XPiJdmSkh6uJDoWguo-J7g", "profile"))
print(get_info(input()))