code: def main():
      args = parser.parse_args()
  
      logger = logging.getLogger("enumerate-api")
      logger.setLevel(logging.INFO)
      ch = logging.StreamHandler()
      formatter = logging.Formatter(
          "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
      )
      ch.setFormatter(formatter)
      logger.addHandler(ch)
  
      file_path = args.file_path
      if file_path is None:
          import statsmodels
  
          file_path = os.path.dirname(statsmodels.__file__)
      current_api = walk_modules(file_path)
      out_file = args.out_file
      if out_file is None:
          import statsmodels
  
          out_file = f"statsmodels-{statsmodels.__version__}-api.json"
      with open(out_file, "w", encoding="utf-8") as api:
          json.dump(current_api, api, indent=2, sort_keys=True)
      if args.diff is not None:
          with open(args.diff, encoding="utf-8") as other:
              other_api = json.load(other)
          generate_diff(current_api, other_api)
  
file_path: statsmodels/tools/releasing/enumerate-api.py
imports: from setuptools import find_packages
  import argparse
  import importlib
  import inspect
  import json
  import logging
  import os
  from pkgutil import iter_modules
  import sys
label_desc: Use image node_id 5 for calling a global function with example usage: main() without return types