If I am in a Python console window, and also have a node editor window open, and I try the command "bpy.ops.node.xxxxnodecommandxxx" for any node editor context sensitive commands, it gives me an incorrect context error because I am in the Python window, not the node editor window. How do I change the window focus from the Python console?

put the bpy.ops call into the simple operator template, change it to be a node operator, remove the test call at the bottom, run script, go to node view and hit spacebar, type the name of your new operator and click/return

you can also override the context, see:
http://www.blender.org/documentation/blender_python_api_2_63_21/bpy.ops.html?highlight=override#overriding-context
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