class_docstr: Reduce node.
  
  Reduce the sequence to a single value
class_docstr_tok: ["Reduce","node",".","Reduce","the","sequence","to","a","single","value"]
code: def _read_from_dq(self):
      data = self.input_que.get_dict()
      if data is None:
          return True
  
      if not self.side_by_to_next(data):
          return False
  
      for k, v in self._col_cache.items():
          if data[k] is not Empty():
              v.append(data[k])
      return True
  
file_path: towhee/towhee/runtime/nodes/_reduce.py
imports: import threading
  from typing import List
  from collections import deque
  from towhee.runtime.time_profiler import Event
  from towhee.runtime.data_queue import Empty
  from .node import Node
  from ._single_input import SingleInputMixin
label_desc: Use image node_id 2 for calling the Reduce obj's underlying member method code with example usage: obj._read_from_dq() and returns: True, True, False