parameters: (self, image)
return_statement: return os.path.join(self._feature_path(), image + '.npz')
docstring: Return path of feature file for specified image
          :param image: Image name, with extension (i.e. 123.jpg)
docstring_summary: Return path of feature file for specified image
          :param image: Image name, with extension (i.e. 123.jpg)
docstring_tokens: Return path of feature file for specified image : param image : Image name with extension ( i . e . 123 . jpg )
function: def _feature_file(self, image):
          """
          Return path of feature file for specified image
          :param image: Image name, with extension (i.e. 123.jpg)
          """
          return os.path.join(self._feature_path(), image + '.npz')
function_tokens: def _feature_file ( self , image ) : return os . path . join ( self . _feature_path ( ) , image + '.npz' )