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introduction.md

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Welcome

  • What are we going to do today?

  • Intros of each coach

  • Intros of each participant

  • Run-through of each tutorial option

  • Split out into tables

    • beginners (incl DiP)
    • intermediates
    • aim to have at least one coach per table

Some tips:

  • terminal stuff demos

    • up arrow
    • tab-completion
    • ctrl+r (Use Git-Bash on Windows)

  • Python console:

    • use IPython!
    • same bits re tab-completion etc

How to set up your environment

The quickest and simplest way to setup the environment is to use conda environment manager. Download Anaconda 4.2.0 (based on python 3.5) here:

If you need anaconda for different archs please refers to: https://repo.continuum.io/archive/index.html
To install anaconda:

bash Anaconda3-4.2.0-MacOSX-x86_64.sh [mac users]
bash Anaconda2-4.2.0-Linux-x86_64.sh [linux users]

For Windows Users

Anaconda for Windows installation guide here: (https://docs.continuum.io/anaconda/install-windows.html)

Install Git-Bash (for Windows)

Although Python does have excellent Windows support, there's a lot of stuff out there on the web that tends to assume you're on Linux or a Mac. Git-Bash gives you a command-line that's more Unixey, so more likely to be similar to what online tutorials assume you have.

Download and install Git from https://git-scm.com/download/win Make sure you choose Run Git and included Unix tools from the Windows command prompt. Then use "Git Bash" for all your command-line stuff. You can now use ls, grep, and all that sort of unixey goodness!

  • Copy + paste:
    • The first time you open it, right click its title bar, edit the defaults, and set "edit mode" to be the default. That'll let you use the mouse to do copy and paste. When you have a selection, hit enter for it to be copied
    • Use Alt-Space, E, P for paste (sigh)

Terminal shortcut tips

A few things I wish someone had told me much earlier on in my unixey adventures!

Up arrow in a terminal, lets you re-run the previous command. Up, then press enter. Or you can modify it. UP again goes further back in time, and down if you overshoot.

Tab completion press tab once to see if the terminal can autocomplete the current command, whether it's an executable, or the path to a file, or even (sometimes) the arguments to a program. Press tab twice to see a list of options

Ctrl+R enters history-search mode. Type part of a previous command to try and find it and re-run it.

Ctrl+D is a shortcut to exit a program (actually, it sends the "end of file, EOF" character). It can exit Python, but it can also exit your main command-line terminal, so careful! If you're on windows and it doesn't work, try Ctrl+Z.

Ctrl+C interrupts stuff, in Python or Bash. Good for stopping sprawling screens of text!

Installing IPython

IPython is an alternative to the regular Python command-line interpreter. It gives you much better tab-completion and a slighty better way of dealing with history and indentation. You can install it with

pip install ipython
# or, on mac/linux
sudo pip3 install ipython

Try the %paste command instead of the normal Ctrl+V for pasting mutli-line stuff into Ipython.

IPython is very popular, particularly with the science crowd, but if you fancy being a bit different, try bpython instead.