class_docstr: Wraps a partial function to act as a Future
class_docstr_tok: ["Wraps","a","partial","function","to","act","as","a","Future"]
code: def successful(self):
      if not self.ready():
          raise ValueError()
  
      return self.exception is NOT_SET
  
imports: import functools
  import time
  import traceback
  from orion.executor.base import AsyncException, AsyncResult, BaseExecutor, ExecutorClosed, Future
label_desc: Use image node_id 5 for calling the _Future obj's underlying member method code with example usage: obj.successful() and returns: unknown