gilguard detects GIL re-enabling C extensions in free-threaded Python

The author has introduced gilguard, a zero-dependency Python package designed for free-threaded Python environments to detect when C extension modules re-enable the Global Interpreter Lock. By running at the start of an application or via a CLI scanner and pytest plugin, gilguard identifies the specific package, module, and line of code that triggered the GIL re-enablement. This helps developers ensure their code genuinely runs free-threaded without quiet fallback failures. Open article →