只需尝试jupyter笔记本。想问两个问题：
1.进入命令模式的快捷方式。
我知道使用esc可以进入命令模式。但不幸的是我正在使用
带有触摸条的丑陋MacBook Pro，其esc按钮是
不太方便。想知道它是否有捷径
命令模式就像vim一样（ctrl + c）？
2. not sure is it just me, but when typing in the cell, I really feel
like working in the shell terminal, so sometimes can't help to
pressing up and down to try to go to historical command. But doesn't
seems to work for the jupyter notebook, right?
谢谢您的回答！