Method delegation in Python
Using Python, a short example on how to delegate specified methods to another object, as compared to composition and inheritance.
Code + Product
Using Python enums in SQLAlchemy models
How to use enums in your models to enforce value consistency.
Python command-line scripts with argparse
A template file for using conditional arguments when running Python scripts from the command line.
SQLAlchemy commit(), flush(), expire(), refresh(), merge() - what's the difference?
I've always struggled to remember between these very similar methods in the SQLALchemy ORM - so I took some time out to research these and write it down.
Prioritized Code Review Checklist - what to look for first, second, and last
A few notes on the code review process, and the steps I go through when reviewing.
Many to many relationships in SQLAlchemy models (Flask)
Building model definitions for many-to-many relationships via a secondary table.
Bash script to relink alembic migrations
Sick of `alembic merge heads` slowing down your builds? Here's a short bash script I wrote to rename your migration files and update its down revision.
Using model callbacks in SQLAlchemy to generate slugs
Dive into SQLAlchemy's little known `event.listen` method to automatically generate slugs when saving a model instance.
Overriding default Jinja dictionary attributes in Python view templates
How to use the `do` Jinja extension to modify an existing dictionary in your view template.
Custom Jinja template filters in Flask
A short snippet for creating a template filter, to present datetime objects in Jinja templates.