[graph-tool] How to use graph-tool to create and modify graphs dynamically?

Hi All, I am new to graph-tool and I am trying to figure out how to create and display graphs dynamically by which I mean the following. To simplify the problem Lets say I have the following edges (1,2) (3,4) (3,7) (3, 8) (2, 3) I don't want to construct the graph with all the edges at once. instead I want to add or delete an edge one by one and render/display that immediately such that I can show the user how the graph is evolving after each edge. Think of it more like a stream of edges that can be either added or deleted. Please let me know if you need more information on the question. otherwise, I hope to hear how this can be achieved using graph-tool? Thanks, Kant