Jupyter shortcuts

1, Shortcuts

1.1 mode switch

ESC: command mode
Enter: edit mode
Y: code(ESC)
M: MD (ESC)
R: raw (ESC)

1.2 Cell Selection

shift+mouse: Multiple choice
shift+↑/↓: Multiple choice
shift+HOME/END: Selectcurrent and all cells above/below

1.3 split/merge

shift+M: Merge current and below cells (ESC)
Ctrl+shift+‘-’: split cell

1.4 insert

A: insert cell above (ESC)
B: insert cell below (ESC)

1.5 delete

dd (double click on d): delete the selected cell (ESC)
z: restore the last deleted cell (ESC)
Ctrl+d: delete cursor line (Enter)
Ctrl+backspace/delete: delete the previous/next word

1.6 code

Ctrl+/: Comment/uncomment code
shift+L/L: Display all/the current cell code line number (ESC)
Ctrl+]/[: indent/unindent (or Select code block, Tab/shift+Tab)
Ctrl+A/Z/Y: all/undo/redo
Tab: code completion
shift+Tab: prompt
shift: ignore

1.7 Fast cursor movement

Ctrl+Home/End: Skip to beginning/end of cell
Ctrl+←/→: Skip to the left/right a prefix

1.8 run code

Ctrl+Enter: run the current cell
Alt+Enter: Run the current cell and insert a cell below
shift+Enter: Run the current cell and jump to the next cell

1.9 others

F: Find and replace (ESC)
H: shortcuts
X/C/Z/shift+V/V/S: Cut/Copy/Undo/Paste Above/Paste Below/Save (ESC)
Shift+space/space: scroll up/down

2. Magic functions in Jupyter (IPython-specific functions)

%lsmagic lists all magic functions%who? is added after a command?Check out how to use it%pwd shows Jupyter's current workspace%hist shows all the historical code that has been run in Jupyter%who displays all variables or names in the current Jupyter environment%rest removes all variables or names in the current Jupyter environment%timeit Calculate the running time of the current line of code (put it at the beginning of the line) %timeit –n10: run 10 rounds%%time Calculate the running time of the current cell code (put it at the beginning of the cell)%matplotlib style used to display plot results%load loads a local Python file or a Python file on the network%run runs a Python file locally or on the network%%writefile saves the code block to the specified filename# Jupyter run code in different languagesEnter at the beginning of the cell: %%***E.g: %%bash, %%HTML, %%python2, %%python3, %%ruby, %%perl# Due to the existence of %matplotlib inline, after inputting plt.plot(x,y_1), it is not necessary to input plt.show() again, the image will be displayed automatically