• Tiago Peixoto's avatar
    Edge and vertex descriptors now carry a weakref to their Graphs · c6c01d62
    Tiago Peixoto authored
    This fixes an obvious problem, where the graph gets deleted, and the
    descriptors are still lying around. Usage of orphaned descriptors will
    now just raise a ValueError.
    
    The __repr__ function of Edge, Vertex, and PropertyMap now give
    something more informative about each object.
    c6c01d62