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Meta·Oct 26, 2026·v0.6.0·open source
Lifeguard
Lifeguard is a static analysis tool developed by Meta designed to detect code patterns that are incompatible with Python's Lazy Imports. It helps developers identify and resolve issues to ease the adoption of deferred import semantics in preparation for Python 3.15.
InfrastructureMLTesting
overview
Lifeguard is a static analysis tool developed by Meta designed to detect code patterns that are incompatible with Python's Lazy Imports. It helps developers identify and resolve issues to ease the adoption of deferred import semantics in preparation for Python 3.15.
key features
- 01Static analysis for Lazy Imports incompatibility detection
- 02Built in Rust for high performance
- 03Leverages ruff for efficient AST traversal
- 04Supports Python 3.12 and 3.14 with 3.15 syntax analysis via flags
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