Haydi: Rapid Prototyping and Combinatorial Objects

Haydi (http://haydi.readthedocs.io) is a framework for generating discrete structures. It provides a way to define a structure from basic building blocks and then enumerate all elements, all non-isomorphic elements, or generate random elements in the structure. Haydi is designed as a tool for rapid prototyping. It is implemented as a pure Python package and supports execution in distributed environments. The goal of this paper is to give the overall picture of Haydi together with a formal definition for the case of generating canonical forms.