code: def find_by_id(self, user, params={}, **options): 
          
          path = "/users/%s" % (user)
          return self.client.get(path, params, **options)
docs: Returns the full user record for the single user with the provided ID.
  
          Parameters
          ----------
          user : {String} An identifier for the user. Can be one of an email address,
          the globally unique identifier for the user, or the keyword `me`
          to indicate the current user making the request.
          [params] : {Object} Parameters for the request