code: def check_max_diff(chunk_list):
      return max(map(len, chunk_list)) - min(map(len, chunk_list))
  
file_path: catboost/library/python/testing/yatest_lib/tests/test_testsplitter.py
imports: from yatest_lib import test_splitter
label_desc: Use image node_id 3 for calling a global function with example usage: check_max_diff(chunk_list) and returns: unknown