Vertex

Vertex:

vertex(graph, id, vertex_function = NULL, glbl = NULL)

A vertex function

>>> def v_fun(vertex_id, graph, result_vertex, result_edge, vertex_glbl, vertex_edge_vars):
        #Do something
        #Modify result_vertex, result_edge, vertex_glbl, vertex_edge_vars
        #sumbit a request to the graph
        return result_vertex, result_edge, vertex_glbl, vertex_edge_vars

Create vertex (the id must be unique)

>>> v = g.set_vertex(g, v_fun, id, var)
>>> #v = topylogic.vertex(g, v_fun, id, var) alternative

When you modify the vertex with set_f, set_glbl, or set_shared_edge_vars it returns itself upon success and None upon failure. Thus, the calls can be chained.

>>> v = v.set_callback(...).set_glbl(...)

Modify the vertex callback function

>>> v = v.set_callback(another_vertex_func)

Modify the vertex variables

>>> v = v.set_glbl(another_var)

Modify the shared variables with the edge

>>> v = v.set_shared_edge_vars(vars)

Destroy vertex (you shouldn't need to call this)

>>> v.destroy()