content: 
  # pickle attribute error
  
  https://stackoverflow.com/questions/27732354/unable-to-load-files-using-pickle-and-multiple-modules/51397373#51397373
  
  import pickle
  
  class CustomUnpickler(pickle.Unpickler):
  
      def find_class(self, module, name):
          if name == 'Manager':
              from settings import Manager
              return Manager
          return super().find_class(module, name)
  
  pickle_data = CustomUnpickler(open('file_path.pkl', 'rb')).load()