constraint error 'int' object is not subscriptable

[Giuseppe Squillace]

Hi I've this constraint :

        

         def v15(model,j1,j2):

         if(j1<j2) and d[j1]==d[j2]): return riga[j1]<=riga[j2]
         else: return Constraint.Skip
    model.v15=Constraint(model.pazienti,model.pazienti,rule=v15)

where riga is a PositiveIntegers variable and model.pazienti is a RangeSet.

And python return me this error, that I don't know how to fix:

 'int' object is not subscriptable 

Thanks for replies.

[Nicholson, Bethany L.]

What are the types of ‘d’ and ‘riga’? Are they singletons or lists? Are they Pyomo components or native Python types?

 

Bethany

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