Grandalf: Graph and Drawing Algorithms Framework

Grandalf is a pure Python package designed for experimenting with graph drawing algorithms. It currently implements two main layouts: the Sugiyama hierarchical layout and a force-driven (energy minimization) approach. Its primary function is to compute node (x,y) coordinates and route edges, providing the structural layout information without performing the actual graphical rendering, which is left to external graphics toolkits. The current version is 0.8, released in January 2023.