czqmike

> 用 [ ] 切片行： ``` In [24]: df[0:3] Out[24]: A B C D 2013-01-01 0.469112 -0.282863 -1.509059 -1.135632 2013-01-02 1.212112 -0.173215 0.119209 -1.044236 2013-01-03 -0.861849 -2.104569 -0.494929 1.071804 In...

Can I just change the **env vars** to do it? I 'm using `Ubuntu 18.04` with `Sogou input method` in `Fcitx`. What I typed can not feedback to me is...