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paiml/depyler

⭐ 358 Rust added to this list on 2025-10-04 repository created 2025-06-04

Depyler is a Python-to-Rust transpiler designed to facilitate the transition from Python to Rust, focusing on generating energy-efficient and memory-safe Rust code. It translates annotated Python code into idiomatic Rust while preserving the original program semantics and providing compile-time safety guarantees. The tool supports type-directed transpilation by leveraging Python type annotations to generate appropriate Rust types, and it performs memory safety analysis by inferring ownership and borrowing patterns. Additionally, Depyler offers semantic verification through property-based testing to ensure behavioral equivalence between the source Python code and the generated Rust code. The transpiler supports a wide range of Python features including functions with type annotations, basic types (int, float, str, bool), collections (List, Dict, Tuple, Set), control flow constructs (if, while, for, match), comprehensions, exception handling mapped to Rust's Result type, classes and methods, async/await, context managers, and iterators. However, it does not support dynamic features like eval or exec, runtime reflection, multiple inheritance, or monkey patching. Depyler is available as a command-line tool and as a library, allowing integration into Rust projects. It also functions as an MCP (Model Context Protocol) server, enabling AI assistants like Claude Code to utilize its capabilities for Python-to-Rust transpilation, migration complexity analysis, semantic verification, and code quality checks. The project follows strict quality standards including high test coverage, low cyclomatic complexity, zero clippy warnings, and no self-admitted technical debt. The architecture of Depyler involves a multi-stage compilation pipeline that converts Python AST to a high-level intermediate representation (HIR), performs type inference, generates Rust AST, and finally produces Rust code. It uses RustPython for parsing and syn/quote for code generation. Documentation and guides are provided for installation, usage, MCP integration, and development. Overall, Depyler is a sophisticated tool aimed at developers looking to migrate Python codebases to Rust with strong guarantees on safety and correctness, leveraging modern static analysis and verification techniques.

https://github.com/paiml/depyler

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