class_docstr: Provides the event that wait() and as_completed() block on.
class_docstr_tok: ["Provides","the","event","that","wait","(",")","and","as_completed","(",")","block","on","."]
code: def __init__(self):
      self.event = threading.Event()
      self.finished_futures = []
  
imports: import collections
  import logging
  import threading
  import time
  import types
label_desc: Use image node_id 1 to create a new _Waiter object from inherited base classes: object with example: obj = _Waiter()