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PyContracts is a Python package that allows to declare constraints on function parameters and return values. Contracts can be specified using Python3 annotations, in a decorator, 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.
Compmake is a non-obtrusive module that provides 'make'-like facilities to your Python computations,including caching of results, robustness to exceptions, and multiprocessing/multihost parallel processing.