Tool cheatsheet

Jupyter Cheatsheet

Run notebooks with JupyterLab, use IPython magics, register kernels, convert notebooks and run them from scripts.

Install and launch

Install JupyterLab — Install JupyterLab into your environment.
Start JupyterLab — Start the server and open the browser at http://localhost:8888.
Run without a browser — Start the server without opening a browser, for use on a remote machine (then tunnel the port over SSH).
Start the classic Notebook — Start the single-document Jupyter Notebook interface.
List running servers — Show running servers and their tokens.

List kernels — Show the kernels Jupyter can use.
Register an environment as a kernel — Make a virtual environment selectable in notebooks.
Remove a kernel — Unregister a kernel you no longer use.
Install a package from a notebook — Use the % magic so pip installs into the notebook's own environment.

Time a statement — Run a statement many times and report the average. %%timeit does the same for a whole cell.
Time a cell — Report how long the whole cell took to run once.
Show plots inline — Display Matplotlib charts below the cell.
Reload edited modules automatically — Pick up changes to imported .py files without restarting the kernel.
Run a shell command — Prefix a command with ! to run it in the shell.
Show help for an object — Append ? to see documentation, or ?? to see the source.
Display rich output — Show several values in one cell, such as DataFrames and images.
List variables in memory — Show the variables defined in the notebook.

Convert to HTML — Export a notebook as a standalone HTML page.
Convert to a Python script — Export the code cells as a .py file.
Run a notebook from the command line — Execute every cell and save the results in a new notebook.
Run a notebook with parameters — Run a notebook with different parameters. Tag one cell "parameters" to define the defaults. Needs papermill installed.
Keep outputs out of Git — Remove outputs and metadata before committing, so diffs stay small. Needs nbstripout.
Learn the key shortcuts — Shift+Enter runs a cell and moves on. Esc enters command mode, where A and B insert cells above or below, DD deletes a cell, M makes markdown and Y makes code.

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