British Summer Time is due to start this weekend. However, for some reason, it’s three weeks after the usual USA switch over, rather than the usual two. Why is this? And when will it happen again?

Software installed in pipx’s managed virtual environments can get stale. How can we update those packages and their dependencies?

Using pipx has improved my daily development experience considerably.

Sanity checking Pytest’s .gitignore files.

Thoughts on the benefits of extracting library code from Python projects into their own packages.

This post explores how to extract arrangement code when working with the Arrange Act Assert pattern so that it can be used with certainty across the test suite.

This post introduces the Arrange Act Assert pattern of testing and shows how it can be used in a Python context with Pytest.

An updated simple assertion helper for comparing instances of Django’s Q objects using pytest in Python 3.

Using pip-tools with multiple requirements files can be difficult. This post describes my current workflow that manages the complexity with a Makefile.

Exploring the various model instance factories available for Django. Each factory is tested based on the quality of the instances it creates. Bonus: talk version and slides also available.

My PyConUK 2016 talk about the AAA pattern for unit tests and how using it can help us all make our tests cleaner, easier to read and as Pythonic as possible.

Exploring Python’s unittest module boolean assert methods and how they can be misleading in certain situations, but not if you RTFM of course.

A super simple assertion helper for comparing instances of Django’s Q objects.

Notes to myself on generators and how to create them with generator expressions and the yield statement.

Notes to myself about Python decorators with a focus on making them testable.

Talk at Pyramid London meetup about testing strategies for Pyramid applications.