# adampalay/contracts

> PyContracts is a Python package that allows to declare  constraints on function parameters and return values.  Contracts can be specified using Python3 annotations,  or inside a docstring :type: and :rtype: tags. PyContracts supports a basic type system, variables binding,  arithmetic constraints, and has several specialized  contracts (notably for Numpy arrays), as well as an extension API.

- **Canonical URL**: https://githubrepo.cloud/repo/adampalay/contracts
- **GitHub Repository**: https://github.com/adampalay/contracts
- **Maintainer / Creator**: https://github.com/adampalay
- **Discovered On**: Oct 2, 2026

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