def _get_profile_image_filename(name, size, file_extension=PROFILE_IMAGE_FILE_EXTENSION):
 return '{name}_{size}.{file_extension}'.format(name=name, size=size, file_extension=file_extension)

def _get_profile_image_filename ( name , size , file_extension = PROFILE_IMAGE_FILE_EXTENSION ) : return '{name}_{size}.{file_extension}' . format ( name = name , size = size , file_extension = file_extension )
returns the full filename for a profile image .