Abaqus scripting to read field output of nodes which are not in a set

Hi,

i am working with a abaqus scripting program for a heat transfer odb file. i know how to read temperature output of any nodes when these nodes are in a earlier defined set. here there are coded that i used.

calset= MyOdb.rootAssembly.nodeSets['SET-1']

Temperaturej=MyuOdb.steps[mystep].frames[p].fieldOutputs['NT11']
Temperaturejset= Temperaturej.getSubset(region=calset)  
Temperaturejsetvalues= Temperaturejset.values  
for w in Temperaturejsetvalues:
Tempj= w.data

but i have to find temperature of several nodes they are not in a set. only after i get the odb file, i can know the nodes that i have to consider. there are lot of these kinds of nodes and it is impossible to create set in assembly by going back. is there anyway to find field output of a nodes when it is not in a set in model data.