code: def _find_package_main(mod_path):
      names = ["__main__.py", "__main__.pyc"]
      for name in names:
          path = os.path.join(mod_path, name)
          if os.path.exists(path):
              return path
      return None
  
imports: import warnings
  import logging
  import os
  import pdb
  import sys
  import traceback
  from guild import exit_code
  from guild import op_util
  from guild import util
label_desc: Use image node_id 16 for calling a global function with example usage: _find_package_main(mod_path) and returns: None, path