find the graph in the network where the clicked node belongs to in vispy

Question

I'd like code to show, when I click on the node of a graph network it highlights the graph that the node belongs to in vispy

I tried this code but the node doesn't get colored nor the neighbored nodes

 def on_mouse_press(event):
        if event.button == 1:

            # Get the node that was clicked on and its index in the
            # graph's list of nodes
            node = event.pos

            # Highlight all edges connected to this node by setting 
            # their widths to 5
            for edge in self.edges:
                if edge[0] == node or edge[1] == node:
                    edge[2].width = 5

            self.canvas.update()

# Connect the callback function to the 'on_mouse_press' 
# event of the graph object
events.on_mouse_press.connect(on_mouse_press)

# Show the canvas with all of its elements
self.canvas.show()