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Jupyter Notebook

Jupyter notebooks

What is Jupyter Notebook?

  • Jupyter

  • A web-based interactive development environment

Jupyter on Windows

If you use Anaconda it already comes with Jupyter notebook. On Windows you can run it from the start menu.

Alternatively:

pip install jupyter

Jupyter on Linux and OSX

Install

For Linux and OSX I recommend using virtualenv and installing with pip.

virtualenv -p python3 ~/venv3
source ~/venv3/bin/activate
pip install jupyter

Run

cd examples/jupyter/
jupyter notebook
  • Your browser should open. If not, there is a link in the terminal.

Jupyter New notebook

  • Create new notebook (New / Python 3)

  • It is called "Untitled" - Rename it

  • Type in some code x = 2

  • Execute code

  • Show content of variables

  • import modules

  • Quit - shut down the notebook server.

  • Number is the execution order Out[] refers to the number of the cell for this this the output.

Jupyter Notebook file format

  • Jupyter file format (show the file) JSON
  • Download file as Python (.py)

Jupyter notebook edit and command mode

  • Modes: Blue - command mode, Green - edit mode

  • Enter - Switch to edit mode (or newline if already in edit mode)

  • ESC - Switch to command mode

  • Ctrl-Enter - execute current cell

  • Shift-Enter - execute current cell

  • Clear Cell data before saving

  • Button h for help

  • Button A - add cell Above current cell

  • Button B - add cell Below current cell

  • dd - delete current cell

  • ...

Jupyter notebook Intellisense (TAB completition)

  • Just press TAB for word completition and method suggestions

Jupyter add

  • Open an existing notebook: add.ipynb

Planets

  • The Planets example we saw in the Pandas chapter

  • planets.csv

  • planets.ipynb

Jupyter input

name = input("Name: ")

File chooser

  • Avoid hard-coded pathes
  • FileChooser.ipynb

IPy Widgets

ipywidgets

Jupyter Notebook and Markdown

Latex in Jupyter Notebook

Jupyter StackOverflow

  • Download a dataset from the Stack Overflow survey.

  • unzip the file. Feel free to remove the __MACOSX/ directory if it is included.

  • SO/so.ipynb

  • SO/selected-rows.ipynb

  • SO/selected-columns.ipynb

Use SciPy image

  • scipy_image.ipynb

Create Random image

  • create_random_image.ipynb

Load image using OpenCV

Genes using Jupyter

jupyter notebook genes.ipynb

More Jupyter examples

  • generate.ipynb Generate a single Pandas DataFrame
  • salary_generate.ipynb
  • salary.ipynb
  • temperatures.ipynb
  • weather.ipynb
  • numpy_matrix.ipynb
  • seaborn_tips.ipynb

Jupyter Notebook: run on other port

jupyter notebook --port 8080

Jupyter Notebook: public IP

jupyter notebook --ip 192.168.1.10

Other Jupyter Notebook Kernels

Jupyter Kernels

Jupyter Notebook convert to other format (nbconvert)

  • nbconvert
jupyter nbconvert try.ipynb --to HTML
jupyter nbconvert try.ipynb --to PDF    (needs also pandoc)

Jupyter Notebook extensions

pip install jupyter_contrib_nbextensions
pip install jupyter_nbextensions_configurator
jupyter nbextensions_configurator enable --user
  • Scratchpad
  • Variable Inspector

Jupyter notebook Checkpoints

  • A very simple, one-level version control.
  • I would not rely on it as it is now. Use a real VCS. (e.g. git)

Jupyter notebook autoreload

def hello():
    print("hello")

examples/ml/reload.ipynb