# Listing folder contents
>>> !ls
mynotebook.ipynb stuff.txt# Getting the current directory
>>> !pwd
/home/george/github/project_1# Printing
from Bash
>>> !echo
"Pizza is delicious!"
Pizza is delicious!
# Getting the current directory.
# The variable
"X" now contains [
"/home/george/github/project_1"]
X = !pwd
pip install jupyterthemes
jt -l
chesterish
grade3
gruvboxd
gruvboxl
monokai
oceans16
onedork
solarizedd
solarizedl
pip install jupyter_contrib_nbextensions
jupyter contrib nbextension install
# This is a
super big title
## This is a big title
### This is a medium title
#### This is a small title
pip install qgrid
jupyter nbextension enable --py --sys-prefix widgetsnbextension
import qgrid
qgrid_widget = qgrid.show_grid(df, show_toolbar=True)
qgrid_widget
添加和删除行;
筛选行;
编辑单元格。