pyhocon isn't always right. Here's how I measured it.

Mon, 19 Oct 2026 00:00:00 +0000

If your Python service reads .conf files, you probably use pyhocon. It’s the HOCON library Python has had for a decade: ConfigFactory.parse_file("app.conf"), conf.get_string("db.host"), done.

I’ve used it in production for years, usually with Pydantic on top. Then I wanted to learn something new, ended up writing a conformance suite for HOCON, and ran pyhocon through it. This post is about what came out for Python.

Pyhocon on Miloš Kozák

pyhocon isn't always right. Here's how I measured it.