code: def main(*args: str) -> int:
      classes = itertools.chain.from_iterable(
          iter_decorated_operators(pathlib.Path(a)) for a in args[1:]
      )
      results = (
          (k.name, check_missing_custom_operator_name(k))
          for k in classes
      )
      failures = [name for name, success in results if not success]
      for failure in failures:
          print(f"Missing custom_operator_name in class: {failure}")
      return len(failures)
  
file_path: airflow/scripts/ci/pre_commit/pre_commit_decorator_operator_implements_custom_name.py
imports: from __future__ import annotations
  import ast
  import itertools
  import pathlib
  import sys
  from typing import Iterator
label_desc: Use image node_id 3 for calling a global function with example usage: main() and returns: len