python-contract binary package in Ubuntu Trusty armhf

 This package provides a means for programming by contract in Python.
 Programming by contact is a methodology whereby a API designer can
 define checkable preconditions and postconditions for method calls,
 and invariants for classes and methods. The most famous use of this
 methodology is in the Eiffel programming language.
 .
 This implementation of programming by contract has the developer
 write constraints in the docstrings of methods and classes that can
 be optionally checked at runtime. If the constraints are not met,
 an exception is raised.

Source package