code: def authorization_link(self, redirect_uri):
          '''Construct OAuth2 authorization link.
  
          Params:    redirect_uri -> URI for receiving callback with token
          Returns authorization URL as string
          '''
          args = '?client_id=%s&redirect_uri=%s' % (
              self.app_key,
              redirect_uri
          )
          uri = "/".join([BASE_URL, API_VERSION, OAUTH, args])
          return urf authorization_link(self, redirect_uri):
          '''Construct OAuth2 authorization link.
  
          Params:    redirect_uri -> URI for receiving callback with token
          Returns authorization URL as string
          '''
          args = '?client_id=%s&redirect_uri=%s' % (
              self.app_key,
              redirect_uri
          )
          uri = "/".join([BASE_URL, API_VERSION, OAUTH, args])
          return uri
docs: Construct OAuth2 authorization link.
  
          Params:    redirect_uri -> URI for receiving callback with token
          Returns authorization URL as string