class_docstr: Queue column.
class_docstr_tok: ["Queue","column","."]
code: def get(self):
      if len(self._q) == 0:
          return Empty()
      return self._q.popleft()
  
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 2 for calling the _QueueColumn obj's underlying member method code with example usage: obj.get() and returns: self, Empty