IPython: How a notebook is changing science

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IPython: How a notebook is changing science Python as a real alternative to MATLAB, Mathematica and other commercial software Juan Luis Cano Rodríguez — @Pybonacci Stockholm — 2015-05-12

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Who am I? ● Almost aeronautical engineer ● Self-taught Python programmer ● Pythonic life: – Pybonacci blog about scientific Python – Chair of the Python Spain Association – Python developer at Airbus Operations – Final Master project: fluid-structure interaction analysis with Python (FEM + SPH) – Personal endeavour: interplanetary trajectory analysis with Python

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Let's get to the point

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Russell's teapot

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Russell's teapot “If I were to suggest that between the Earth and Mars there is a china teapot revolving about the Sun in an elliptical orbit, nobody would be able to disprove my assertion provided I were careful to add that the teapot is too small to be revealed even by our most powerful telescopes.

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Expectations...

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...and Reality™

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Is there a better way?

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IPython notebook

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What is this IPython notebook? ● Interactive Python interpreter in the browser ● Open format combining executable code, text and multimedia ● Inspired in Mathematica ● Based on the Python programming language Demo! http://www.nature.com/news/ipython-interactive-demo-7.21492

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The counter- analysis in a notebook

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Python *Demand of Python programmers for Big Data jobs doubled in the last twelve months, says Forbes

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Teaching tool ● Book: Bayesian Methods for Hackers ● Lorena Barba courses: ● AeroPython* ● 12 steps to Navier Stokes ● Practical Numerical Methods with Python ● Harvard CS109 Data Science *Not to be confused with our AeroPython ;)

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...the rise to fame

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Some myths → There's no support → Won't be free forever → Free software has bugs

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Some myths → There's no support Enthought, Continuum Analytics → Won't be free forever → Free software has bugs

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Some myths → There's no support Enthought, Continuum Analytics → Won't be free forever Free software belongs to the community → Free software has bugs

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Some myths → There's no support Enthought, Continuum Analytics → Won't be free forever Free software belongs to the community → Free software has bugs Naturally.

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Can we trust CAS?

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Moral: Free software has bugs

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World domination?

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Ju·py·ter /ˈdʒu pɪ tər/ noun 1. the future incarnation of IPython. Julia + Python + R

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Project Jupyter ● Separation of the language-agnostic components – Jupyter: protocol, format, multi-user server – IPython: interactive Python console, Jupyter kernel ● Jupyter kernels = Languages which can be used from the notebook (33 and counting) ● Surprises are coming...

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¡IMatlab!

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Some recent events May 7th, 2015: ● GitHub + Jupyter notebooks = <3 https://github.com/blog/1995-github-jupyter-notebooks-3 ● Embracing Jupyter Notebooks at O'Reilly https://beta.oreilly.com/ideas/jupyter-at-oreilly ...that scalated quickly!

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Further resources ● Official Python tutorial on python.org ● Langtangen “A primer on Scientific Programming with Python” ● “Curso de Python para científicos e Ingenieros” on YouTube (in Spanish) ● AeroPython #0 with installation and getting started instructions (in Spanish) ● Software Carpentry, programming for scientists and engineers ● MOOCs at Coursera, EdX...