CrossHair – SMT Assisted Testing for Python
An analysis tool for Python that blurs the line between testing and type systems. - pschanely/CrossHair
CrossHair – SMT Assisted Testing for Python launched on January 15, 2020 with 97 votes, #337 of 3,486 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 6 years on.
In plain words
CrossHair is a testing tool for Python developers that automates the process of finding bugs in code. It uses symbolic execution and property-based testing to generate test cases automatically, helping developers discover edge cases and potential failures without writing extensive manual tests. The tool integrates with existing Python projects and is designed to complement traditional testing approaches by exploring code paths systematically.
written from the facts on this page · September 2026
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