Django: introducing django-crawl đź”—
I recently migrated one of my client projects from the legacy django-csp package to Django 6.0’s built-in Content Security Policy (CSP) support (relea [...]
Adam Johnson
Posts
Django: introducing django-orjson đź”—
Just as cars painted red are known to be faster, libraries implemented in Rust are also known to be faster. Today’s example is orjson, a Rusty replace [...]
Python: find all instances of a class with gc.get_objects() đź”—
Here’s a lovely hack that I’ve used when machete-mode debugging. Say you have a class, and you want to find its live instances, perhaps to check how m [...]
Python: store extra data for objects in a WeakKeyDictionary đź”—
In several programs, I’ve wanted to solve the problem of associating extra data with an object. For example, in django-upgrade, the individual “fixer” [...]
Django: introducing django-integrity-policy đź”—
Back in January, Firefox’s Security & Privacy Newsletter for 2025 Q4 piqued my interest with this mention: Integrity-Policy: Firefox 145 has added sup [...]
Django: fixing a memory “leak” from Python 3.14’s incremental garbage collection 🔗
Back in February, I encountered an out-of-memory error while migrating a client project to Python 3.14. The issue occurred when running Django’s datab [...]
Python: introducing profiling-explorer đź”—
I’ve made another package! Like icu4py, which I made in February, it was sponsored by my client Rippling. And like tprof, which I made in January, it’ [...]
Python: introducing icu4py, bindings to the Unicode ICU library đź”—
I made a new package! Thank you to my client Rippling for inspiring and sponsoring its development. ICU (International Components for Unicode) is Unic [...]
Django: profile memory usage with Memray đź”—
Memory usage can be hard to keep under control in Python projects. The language doesn’t make it explicit where memory is allocated, module imports can [...]
Zsh: select generated files with (om[1]) glob qualifiers đź”—
I’ve recently been using memray, a memory profiler for Python, to optimize the startup memory usage (and time) for a client. It’s a fantastic tool, bu [...]