Pyccolo: Declarative Instrumentation for Python

Pyccolo (pronounced like "piccolo") is a library for declarative instrumentation in Python, allowing users to specify *what* instrumentation to perform rather than *how* to implement it. It aims for ergonomics, composability, and portability across various Python versions. It achieves this by embedding instrumentation at the source code level. The library is actively maintained, with the current version being 0.0.85, and supports Python versions from 3.6 up to 3.14 (since v0.0.73).