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Created December 3, 2025 14:57
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Evaluating CLIPSPy relative to drools for ansible-rulebook
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deepdive.md

Overview clipspy provides Python CFFI bindings to CLIPS 6.42, the expert system shell originally developed at NASA's Johnson Space Center. CLIPS is a rule-based programming language useful for creating expert and production systems where a heuristic solution is easier to implement and maintain than an imperative one. PyPI Project Health

License: BSD 3-Clause Latest Release: 1.0.6 (October 2025) Python Support: 3.9 - 3.14 Platforms: Linux (x86_64, aarch64), macOS (Intel & Silicon), Windows Wheel availability: Pre-built wheels for most platforms via pip

Core Architecture The clipspy bindings aim to be a "pythonic" thin layer built on top of the CLIPS native C APIs. Most of the functions and methods directly resolve to the CLIPS functions documented in the Advanced Programming Guide. Readthedocs Key characteristics:

CLIPS uses forward chaining. Like other expert system languages, CLIPS deals with rules and facts. Various facts can make a rule applicable. An applicable rule is then fired. Wikipedia Rules are defined in CLIPS' Lisp-like syntax Python functions can be embedded into CLIPS and called from rules Full working memory management with facts, templates, and inference

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