How to iterate through nodes and display them as a template Like suppose i have 10 shader nodes , so code will check first how many nodes does selected object has then it creates operator for each one of them 

Like 10 nnodes so we will have 10 buttons in the tools panel , 

So when we press anyof those button it will display nodes template 

So basicall can any body point me in the right direction , like how do i iterate through nodes , anything that might come handy in learning
Here's the quickest way possible

for node in bpy.context.object.active_material.node_tree.nodes:
    print (node)