code: def findkeys(node, kv):
      # refer to https://stackoverflow.com/questions/9807634/find-all-occurrences-of-a-key-in-nested-dictionaries-and-lists
      if isinstance(node, list):
          for i in node:
              for x in findkeys(i, kv):
                  yield x
      elif isinstance(node, dict):
          if kv in node:
              yield node[kv]
          for j in node.values():
              for x in findkeys(j, kv):
                  yield x
  
file_path: milvus/tests/python_client/utils/util_common.py
imports: import glob
  import time
  from yaml import full_load
  import json
  import pandas
  from utils.util_log import test_log
label_desc: Use image node_id 2 for calling a global function with example usage: findkeys(node, kv) without return types