what I am trying to do is write a script that finds all the read nodes above a 
selected node in the graph.
so what I figure I have to do is 
get the dependencies of a node and loop through testing if they are a read node 
and continue recursively 

for a in nuke.selectedNode().dependencies():
    name = a.name()
    for n in name:
        select n:
        if n.Class() == ?Read?:

but I don't know how to select a node from its name
can someone please help? I will accept any suggestions on how to make this 
easier as well!
Thanks



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