Lifeguard
Lifeguard is a static analyzer to detect Lazy Imports incompatibilities and ease the adoption overhead for Lazy Imports in Python
by facebookPython
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Commit activity
Last 12 weeks · 274 commits
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Recent PRs & issues
Active · 1 in progress · Last activity 6h ago
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Re-exported symbols (e.g. bar.Foo re-exporting foo.Foo) were not being resolved to their original definitions during safety analysis. This caused check_call to miss unsafe constructors/functions accessed through re-exports, incorrectly marking them as safe. Make the re_exports more visible to the main analysis, and resolve them when needed. I'm not totally happy with this approach, though, because it's would be easy to miss new places that a reexport needs to be chased down. I'll do a bit more thinking, but I'd be interested in architectural suggestions from the team.
Recent fixes
Changes: Group errors by ErrorKind (using BTreeMap for consistent ordering) Sort errors within each group by line number Display the count of occurrences for each error type Example output: ImportedModuleAssignment (2) Line 12 - os Line 17 - sys UnsafeFunctionCall (1) Line 38 - example.demo.unsafe_method Benefits: Easier to scan large reports and identify patterns Highlights the most common issue categories Does not change the underlying analysis Backward compatible with existing analysis logic Testing: Updated existing tests to verify grouped output Added comprehensive test for grouping and sorting behavior
When processing modules in site_packages, track the current package and use that to resolve relative imports. We don't bother doing this for packages in the project because they are currently all collected.
Most of the tests test the shared find_sources code directly, but also add a smoke test each for run-tree and gen-source-db that verify they are both supporting site-packages.
Structured data for AI agents
Repository: facebook/Lifeguard. Description: Lifeguard is a static analyzer to detect Lazy Imports incompatibilities and ease the adoption overhead for Lazy Imports in Python Stars: 86, Forks: 9. Primary language: Python. Languages: Python (72.1%), Rust (27.9%), Starlark (0%). License: MIT. Topics: lazy-imports, pep810, python, rust, static-analysis. Open PRs: 1, open issues: 0. Last activity: 6h ago. Community health: 75%. Top contributors: brittanyrey, martindemello, alrobichaud, QuantumManiac, msullivan, samwgoldman, dependabot[bot], czardoz, alexmalyshev, kuecks and others.