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Intro to Jupyter Notebook and lightkurve

Bb1020684e201eef0a2b34f8f7ab214d?s=47 Oliver Hall
November 02, 2018

Intro to Jupyter Notebook and lightkurve

I held a brief skill transfer session for our research group; I explained the pros and cons of using Jupyter Notebook, and provided some examples of its use by presenting the `lightkurve` package, using two demos (one live, and one prepared by @TheChedgehog).

The iPython notebooks of the demos can be found on my Github here: https://github.com/ojhall94/hackshop/tree/master/skill_transfers/jupyter-notebook-lightkurve

Bb1020684e201eef0a2b34f8f7ab214d?s=128

Oliver Hall

November 02, 2018
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  1. jupyter notebooks pros, cons & examples with python

  2. WHAT IS JUPYTER NOTEBOOK? ➤ An open-source web application ➤

    Functions as a more easily interactive iPython terminal ➤ Compatible with over 40 programming languages
  3. A QUICK RUNDOWN cell run history used python kernel code

    cell markdown cell run cell, stop, restart kernel, run all
  4. WHEN IS JUPYTER NOTEBOOKS GREAT? ➤ Sharing a code is

    not an efficient way of sharing knowledge ➤ Sharing a Jupyter Notebook is! ➤ When illustrating how to reproduce a result (i.e. tutorials and blog posts) ➤ When tweaking plots to get them just right ➤ When prototyping new code ➤ When showing your supervisor what you got up to this week ➤ Working with object-based code, like ‘lightkurve’!
  5. WHEN IS JUPYTER NOTEBOOKS TERRIBLE? ➤ When building a ‘script’

    — cannot be run from commandline ➤ Performing delicate analysis — no edit history, cells could be ordered wrong ➤ Memory intensive work — all variables are stored in memory until closed ➤ When learning Python — notebooks discourage good habits, don’t teach the basics Credit: Why I Dont Like Jupyter Notebooks by Joel Grus
  6. SOME USEFUL COMMANDS ➤ Shift + Enter : Run current

    cell ➤ ESC : enter ‘command mode’ ➤ ESC -> b : create a new cell below ➤ ESC -> m : turn cell into `markdown` ➤ ESC -> y : turn cell into code ➤ ESC -> l : add line numbers to cell ➤ ESC -> d -> d : permanently deletes cell! ➤ Keyboard shortcuts compeltely customiseable! ➤ You can select, copy, cut, paste and move cells!
  7. LIGHTKURVE lowering the barrier for transit photometry (& now also

    for asteroseismology)
  8. WHAT IS LIGHTKURVE? ➤ An ‘object-based’ Python package ➤ User-friendly

    analysis of flux time series data, especially Kepler, K2, and now TESS! ➤ Open source, so you can contribute! ➤ Constantly being upgraded
  9. BETTER TO SHOW THAN TELL we’ll work through a tutorial

    and a live test finding the first TESS planet candidate going from a target pixel file to a power spectrum (i’ll take suggestions from the audience)
  10. SOME USEFUL LINKS! Install & learn about Jupyter Install &

    learn about lightkurve Raise an issue on the repo, or fix an existing one!