class_docstr: Service class for convenient work with list of dicts(db response)
class_docstr_tok: ["Service","class","for","convenient","work","with","list","of","dicts","(","db","response",")"]
code: def __contains__(self, item):
      if item in self.__getitem__(0):
          return True
      return False
  
imports: import os
  import time
  import tempfile
  import json
  from pathlib import Path
  import docker
  import pandas
  import requests
  import pytest
  from .conftest import docker_inet_ip, TEMP_DIR
label_desc: Use image node_id 1 for calling the Dlist obj's underlying member method code with example usage: obj.__contains__(item) and returns: False, True