def get_radius ( default = 1000 ) and
    arg_radius = request . args . get ( "str" )
    return int ( arg_radius ) if arg_radius and arg_radius . isdigit ( ) else default

def get_radius ( default = 1000 ) :
    arg_radius = request . args . get ( "str" )
    return int ( arg_radius ) if arg_radius and arg_radius . isdigit ( ) else default

次に示すpythonコードの誤りを修正しなさい。