code: def from_input(cls, input_file=sys.stdin, modify=None, backend=None):
          
  
          # Detect the hook type if not given directly
          name = os.path.basename(sys.argv[0])
          modify = name.startswith('on-modify') if modify is None else modify
  
          # Create the TaskWarrior instance if none passed
          if backend is None:
              backends = importlib.import_module('tasklib.backends')
              hook_parent_dir = os.path.dirname(os.path.dirname(sys.argv[0]))
              backend = backends.TaskWarrior(data_location=hook_parent_dir)
  
          # TaskWarrior instance is set to None
          task = cls(backend)
  
          # Load the data from the input
          task._load_data(json.loads(input_file.readline().strip()))
  
          # If this is a on-modify event, we are provided with additional
          # line of input, which provides updated data
          if modify:
              task._update_data(json.loads(input_file.readline().strip()),
                                remove_missing=True)
  
          return task
docs: Creates a Task object, directly from the stdin, by reading one line.
          If modify=True, two lines are used, first line interpreted as the
          original state of the Task object, and second line as its new,
          modified value. This is consistent with the TaskWarrior's hook
          system.
  
          Object created by this method should not be saved, deleted
          or refreshed, as t could create a infinite loop. For this
          reason, TaskWarrior instance is set to None.
  
          Input_file argument can be used to specify the input file,
          but defaults to sys.stdin.