Python

Notes and pointers on the world's best programming language.

Django form fields

A pointer on how to process them.

Installing Pydee on OSX

A short note of getting Pydee (and PyQt) to run on a Mac.

Setuptools and the single file

Problems with making an installer for a simple module

Subprocess zombies

Cleaning up your errant commandlines.

Installing MySQLdb

When unresolved linker symbols attack.

rst2beamer

A restructured text based tool for preparing presentations.

Encoding types in etree

Setting encoding in the header of ElementTree generated XML.

Converting Ordnance Survey coordinates

In which OS positions are transformed into something saner and less UK-centric.

Applescript via Python

Controlling Mac applications with appscript

Project Euler

 

Unicode and HTML entities

In which we struggle with a cacophony of characters for the web.

SQLAlchemy merge and relations

In which an oddity in SQLAlchemy is spotted, and it turns out to be a bug not a misunderstanding.

Surprises

In which Python does several unexpected but logical things.

Using percent in a string

A (perhaps) obscure fact - how to use the percent sign in a Python string.

The etree tail quirk

How to make a good XML solution for Python better.

Slots

A new, and poorly explained, feature of Python classes.

Matplotlib

Notes on installing and using.

Can't use print

Who would of thunk it? 'print' is a reserved word everywhere.

Installing and using PIL

Overcoming the sometimes tricky installation of the Python Imaging Library and improving image quality.

When Python asserts don't

Bewildered why error conditions are breezing right past the 'assert' statements you sprinkled through your Python script? Maybe you made the same basic mistake I did ...