PyPM is being replaced with the ActiveState Platform, which enhances PyPM’s build and deploy capabilities.
Create your free Platform account
to download ActivePython or customize Python with the packages you require and get automatic updates.
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.