- https://composingprograms.netlify.app/
- https://csdiy.wiki/%E7%BC%96%E7%A8%8B%E5%85%A5%E9%97%A8/Python/CS61A/#_1
- https://github.com/InsideEmpire/CS61A-Website-Archive
- https://github.com/InsideEmpire/CS61A-Assignments
print()中的内容如果以'debug'作为前缀不会被比对到