class_docstr: Queue column.
class_docstr_tok: ["Queue","column","."]
code: def put(self, data) -> bool:
      if data is Empty():
          return
      self._q.append(data)
  
imports: import threading
  import copy
  from enum import Enum, auto
  from typing import List, Tuple, Union, Dict, Optional
  from collections import deque, namedtuple
label_desc: Use image node_id 3 for calling the _QueueColumn obj's underlying member method code with example usage: obj.put(data) without return types