          pypath = os.path.dirname(os.path.realpath(sys.argv[0]))
          config_file = os.path.join(pypath, "config", ".faceswap")
          return config_file
  
      def _get_backend(self):
          """ Return the backend from either the `FACESWAP_BACKEND` Environment Variable or from
          the :file:`config/.faceswap` configuration file. If neither of these exist, prompt the user
          to select a backend.
  
          Returns
 
</s> remove     def __init__(self):
 </s> add     def __init__(self) -> None: </s> remove         return fs_backend.lower()
 </s> add         return fs_backend </s> remove     def _get_config_file(cls):
 </s> add     def _get_config_file(cls) -> str: </s> remove     def _configure_backend(self):
 </s> add     def _configure_backend(self) -> ValidBackends:
    def _get_backend(self) -> ValidBackends:
          pypath = os.path.dirname(os.path.realpath(sys.argv[0]))
          config_file = os.path.join(pypath, "config", ".faceswap")
          return config_file
  
    def _get_backend(self) -> ValidBackends:
          """ Return the backend from either the `FACESWAP_BACKEND` Environment Variable or from
          the :file:`config/.faceswap` configuration file. If neither of these exist, prompt the user
          to select a backend.
  
          Returns
keep keep keep keep replace keep keep keep keep keep
 lib.Utils - add DPI detector 
lib/utils.py