text: import requests
  
  from allauth.socialaccount.providers.oauth2.views import (
      OAuth2Adapter,
      OAuth2CallbackView,
      OAuth2LoginView,
  )
  
  from .provider import ExistProvider
  
  
  class ExistOAuth2Adapter(OAuth2Adapter):
      provider_id = ExistProvider.id
      access_token_url = 'https://exist.io/oauth2/access_token'
      authorize_url = 'https://exist.io/oauth2/authorize'
      profile_url = 'https://exist.io/api/1/users/$self/profile/'
  
      def complete_login(self, request, app, token, **kwargs):
          headers = {'Authorization': 'Bearer {0}'.format(token.token)}
          resp = requests.get(self.profile_url, headers=headers)
          extra_data = resp.json()
          return self.get_provider().sociallogin_from_response(
              request, extra_data
          )
  
  
  oauth2_login = OAuth2LoginView.adapter_view(ExistOAuth2Adapter)
  oauth2_callback = OAuth2CallbackView.adapter_view(ExistOAuth2Adapter)
  