Replay Python function is used to get the code to extract NT11 of a Node ID.

 After opening the ODB, hide/zoom/rotate to define the position and node ID, the NT11 was extracted by selecting (click) a desired node on screen. The node is also known the ID, example 26.

The Python code got after selecting the node.

xyList = xyPlot.xyDataListFromField(odb=odb, outputPosition=NODAL, variable=((
   'NT11', NODAL), ), nodePick=(('Part-1', 1, ('[#0:137 #4000 ]', 
   )), ), )

The [#0:137 #4000 ] to define the selected node.

How to replace [#0:137 #4000 ] by Node ID, so it is easier to do next time, just only replace the number ID of node, NOT define by hide/zoom/rotate/select another node.