Tutorials

Hands-on programming tutorials from Python GUIs to electronics and microcontrollers. If you're looking for more in-depth or structured guides to programming, take a look at my courses and books.

tutorials python

Getting Started With Git and GitHub in Your Python Projects

Version-Controlling Your Python Projects With Git and GitHub

tutorials python

Working With Classes in Python

Understanding the Intricacies of Python Classes

tutorials python

Getting started with VS Code for Python

Setting up a Development Environment for Python programming

tutorials python

Using MicroPython and uploading libraries on Raspberry Pi Pico

Using rshell to upload custom code

tutorials python

Dictionary Views & Set Operations

Working with dictionary view objects

tutorials python

Dictionaries

A rather long guide to Python's key:value hash type

Partial Least Squares Discriminant Analysis (PLS-DA) with Python

Partial least squares discriminant analysis (PLS-DA) is an adaptation of PLS regression methods to the problem of supervised clustering. It …

tutorials science

1D 1H NMR data processing

1D 1H NMR is a commonly applied to metabolomic studies, being well suited to untargeted analysis of complex biofluids …

tutorials science

Automatic phase correction of NMR spectra

This notebook demonstrates automatic phase correction algorithms implemented for nmrglue. Two standard algorithms are implemented: ACME algorithm by Chen Li …

tutorials science

NMRLab 1D NMR processing (MATLAB)

This notebook uses a subset of the available processing features in NMRLab (+Metabolab) to process 1D NMR spectra. The output …

tutorials science

MetaboHunter 1D NMR Identification (Python Interface) Demo

MetaboHunter is a web service for automated assignment of 1D raw, bucketed or peak picked NMR spectra. Identification is performed …

tutorials science

Dot Blot Analysis with ImageJ

Analyzing a dot blot in ImageJ by background subtraction and measuring the integrated density of each dot. This dot blot …

tutorials science

Measuring cell fluorescence using ImageJ

Determining the level of cellular fluorescence from fluorescence microscopy images in ImageJ Open ImageJ. Note: ImageJ may be freely downloaded …

tutorials science

Cytoscape v3.0.2 on Mac OS X

Cytoscape 3.0.2 was released on 1st August, a bugfix release for the 3.x series. However, there is …

tutorials python

cx_Freeze and PySide on Mac

I'd had success using py2app for building Mac binaries for distribution but wanted to give cx_Freeze a go since it's …

Pelicans on Webfaction

As mentioned in the previous post, I recently migrated this site over to the very clever Pelican. Setting it up …

tutorials matlab

Speed up MATLAB on MacOS X

On MacOS X 10.5 there is considerable slow-down in the MATLAB editor and other GUI elements. The issue is …

Customize directory colors

You can use the command ls --color (or an alias) to show directories with colours for folders, files, links, etc …

Control memcached from the command line

memcached is a general-purpose distributed memory caching system originally developed by Danga Interactive for LiveJournal but now used by many …

tutorials computing

Install Haiku under Mac OS X with Virtualbox

Haiku is an open source operating system currently in development that specifically targets personal computing. Inspired by the Be Operating …

Find all files containing a given string

A quick one-liner to recursively search files for a given text string. Open up a terminal session and enter the …

Django AJAX threaded-comments using only jQuery

Upgrade threaded comments using mptt to allow AJAX submission of comments and update the template - without any backend hacking of …

Display external RSS feeds on your WordPress blog

Show another of your blogs or any other RSS news feed on your WordPress blog with this simple template code …

Highlight author's comments on WordPress blog

A simple trick to make comments from the original post author stand out a bit more in the comment listing …

tutorials linux

Kill unresponsive applications on Linux

Sometimes things go a bit wrong. Sometimes they go very wrong. XKill is a simple little application that allows you …

tutorials linux

Change the 'Desktop' directory on Linux

On desktop setups where icons are shown on the desktop these are normally taken from the specific folder ~/Desktop. If …

Collaborate in the shell with screen (multiuser)

Screen is a neat little program that allows you to use multiple virtual terminals in a single session on Unix …

tutorials linux

Installing Google Earth on Ubuntu

Install the latest version of Google Earth for linux direct from Google sources.

Bash Command Substitution

Bash command substitution performs a given command replacing the marker with the resulting standard output. It is particularly useful when …

Syntax highlighting with Django and Markdown

Syntax highlighting is more than just eye candy. It can turn a block of impenetrable code into a simple grok …

Django Threaded Comments

Django ships with it's own comments contrib app that provides commenting on arbitrary models. However this is a flat-comment system …

Remove duplicate lines from text files (with sort)

A quick method to remove duplicates from text files - including for example CSV files - where multiple records have been added …

Control Console with SysReq

System request (often abbreviated SysRq or Sys Req) is a key on keyboards for PCs that has no standard use …

Use bash brace expansion to save {hours,days}

Brace expansion is one of the most powerful bash tricks with the potential to save you considerable time. Here are …

Get a list of all processes not run by you

Find the currently running processes on your system that were not started by yourself. A great way to find out …

Get file type information from the command line

Often forgotten the file command will give you a simple summary of a file's type and content. At the prompt …

tutorials linux

Install Cinnamon on Ubuntu 12.04

Cinnamon is a re-implementation of the Gnome 2 desktop in GTK3 developed by the Linux Mint project as an alternative …

Reload .bash_profile without logging in again

Update your session to new settings in .bash_profile without logging out and back in again. At the prompt enter: source …

Find all running processes of a program

Find the pids of all instances/processes of a given program running on your system Open a terminal and enter …

Piping between shells

Create your own bash pipes to send program output between shells, processes and users. You may already be familiar with …

tutorials python

Quickly serve a folder via Web Server

A short one liner to quickly serve any folder via a http server. Start the server cd to the directory …

Set CDPATH to ease folder navigation

CDPATH is an environment variable which tells the cd command where to look for the specified folder. By including the …

Use ifconfig.me to return your IP and Host

ifconfig.me is a web service that displays information about your connection, including IP address, hostname and User Agent string …

tutorials computing

Find top 404 Error pages (Apache)

A quick one-liner to find the most common pages giving 404 errors on your apache2 setup. Set this up as …

Execute last command as root

Re-run previously entered command as root user. python sudo !! !! is automatically substituted to the content of the previous command. Turning …

tutorials linux

Use GNOME Looking Glass for debugging

Looking Glass is GNOME Shell's integrated inspector tool and JavaScript console useful for debugging. Open the run prompt by pressing …

tutorials linux

Debug GNOME Shell

Debug Gnome Shell, or run it from the console, either for plugin development or troubleshooting. Switch to the console using …

Re-execute command line with !

Bash history expansion allows you to quickly re-run previous commands using ! and the number of the command in your history …

Control-R Through Your History

Interactively search through your command line history with a simple keyboard shortcut. At a new shell prompt (bash or Terminal …

Install HomeBrew package manager for Mac

Homebrew is the easiest and most flexible way to install the UNIX tools Apple didn't include with OS X. It …

Use screen to manage persistent sessions

GNU Screen is a command-line application that allows use of multiple virtual sessions within a single real terminal or remote …

Add Git Branch Name to Terminal Prompt (Mac)

When in a repository directory you can show the name of the currently checked out Git branch in the prompt …

Show Warning in Prompt when Shell Loses Directory

Show a warning in the Terminal's prompt when the current working directory is no longer where the shell expects it …

Setup Android Development with Eclipse on Mac

Install and setup the tools necessary for Android development with Eclipse on Mac OS X (Lion) Requirements Mac running Mac …

tutorials computing

Initialize Git Repository from Local Files

Initialize a Git repository from a local directory, and the files therein, pushing it to an existing but empty remote …

Developing with WP-Plugins SVN

The new plugin download interface, hooked into wp-plugins.org adds extra incentive for plugin developers to use SVN. There are …

tutorials linux

KDE fileprotocol & transportprotocol URLs

While getting started using the new wp-plugins.org SVN I was looking for a quick way to download the contents …

Apache vs. the Slashdot Effect

Increasing traffic is the measure of success for a website. More visitors equals more exposure which in turns generates more …

Talking C

Introduction to SAM C (a small-C variant) for SAM Coupé BASIC programmers

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