This is often less of an issue for attributes and arguments of a method, but often enough developers forget to specify what the expected return value of a method or function is or which exceptions it can raise or catch.

• 尽管对于方法属性和参数这显得无足轻重,但是太多的开发人员常常忘记指定方法的预期返回值，或者忘记编写捕捉异常的功能模块。