stanford-centaur/PyPantograph
A Machine-to-Machine Interaction System for Lean 4.
PyPantograph is a system designed for developers working with Lean 4, a formal proof assistant. It allows you to programmatically interact with Lean 4, executing tactics and inspecting Lean constants. This project is for engineers building advanced theorem-proving tools or integrating Lean 4 into larger automated reasoning systems.
136 stars.
Use this if you are a developer building automated reasoning systems or tools that need to programmatically control and analyze Lean 4 proofs and its internal state.
Not ideal if you are an end-user of Lean 4 who is manually writing proofs and not looking to build programmatic interactions.
Stars
136
Forks
31
Language
Python
License
Apache-2.0
Category
Last pushed
Feb 24, 2026
Commits (30d)
0
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