Jupyter Notebook Cheat Sheet

Jupyter Notebook is an open-source web application that allows users to create and share documents that contain live code, equations, visualizations, and narrative text. It is widely used in data science, scientific computing, and machine learning.

Jupyter Notebook supports over 40 programming languages, including Python, R, Julia, and Scala. It provides an interactive environment for data exploration, analysis, and visualization. Users can write and execute code, view and manipulate data, and create visualizations all in one place.

This cheat sheet provides an overview of the most commonly used Jupyter Notebook commands and shortcuts.

Table of Contents

• Keyboard Shortcuts
• Cell Operations
• Markdown Formatting
• Magic Commands
• Debugging
• References

Keyboard Shortcuts

Shortcut	Description
Esc	Enter command mode
Enter	Enter edit mode
Shift + Enter	Run cell and select next cell
Ctrl + Enter	Run cell
Alt + Enter	Run cell and insert new cell below
Y	Change cell type to code
M	Change cell type to markdown
A	Insert cell above
B	Insert cell below
D, D	Delete selected cell
Z	Undo cell deletion
Shift + M	Merge selected cells
Ctrl + S	Save notebook
Shift + L	Toggle line numbers
Shift + Tab	Show docstring for object
Ctrl + Shift + -	Split cell at cursor
Ctrl + Shift + P	Open command palette

Cell Operations

Operation	Syntax	Description
Comment	#	Add a comment to a code cell
Output	print()	Display output from a code cell
Clear Output	Ctrl + L	Clear the output of a cell
Interrupt	I, I	Interrupt the execution of a cell
Restart	0, 0	Restart the kernel
Run All	Shift + R, A	Run all cells in the notebook
Run Selected	Shift + R, S	Run selected cells in the notebook

Markdown Formatting

Syntax	Description
#	Heading
**bold**	Bold
_italic_	Italic
---	Horizontal line
* item	Unordered list
1. item	Ordered list
> quote	Blockquote
	Image
[link text](http://url.com)	Link

Magic Commands

Command	Syntax	Description
List	%lsmagic	List all available magic commands
Time	%%time	Time the execution of a cell
Load	%load file.py	Load code from a file into a cell
Save	%save file.py	Save code from a cell to a file
Debug	%debug	Enter interactive debugger
PDB	%pdb	Automatically enter debugger on error
Matplotlib	%matplotlib inline	Display matplotlib plots inline

Debugging

Command	Syntax	Description
Set Breakpoint	import pdb; pdb.set_trace()	Set a breakpoint in code
Next	n	Execute the current line and move to the next line
Step	s	Step into a function call
Return	r	Continue execution until the current function returns
Quit	q	Quit the debugger

References

• Jupyter Notebook Documentation