The beauty of this is, it keeps me from getting lazy, and not only testing my program and the thing that found the bug, but in all the things that used to work.

运行函数而不用再输入了，这其中的,美妙之处在于，它让我变的勤快了点,并不是仅仅的去测试程序发现bug方面，同样适用于那些正常工作的模块。

麻省理工公开课 - 计算机科学及编程导论课程节选