code: def _init_mythril_dir() -> str:
          
  
          try:
              mythril_dir = os.environ["MYTHRIL_DIR"]
          except KeyError:
              mythril_dir = os.path.join(os.path.expanduser("~"), ".mythril")
  
          if not os.path.exists(mythril_dir):
              # Initialize data directory
              log.info("Creating mythril data directory")
              os.mkdir(mythril_dir)
  
          db_path = str(Path(mythril_dir) / "signatures.db")
          if not os.path.exists(db_path):
              # if the default mythril dir doesn't contain a signature DB
              # initialize it with the default one from the project root
              asset_dir = Path(__file__).parent.parent / "support" / "assets"
              copyfile(str(asset_dir / "signatures.db"), db_path)
  
          return mythril_dir
docs: Initializes the mythril dir and config.ini file
          :return: The mythril dir's path