I am using the MIP optimization library but I face a problem in the objective function. Any help would be very much appreciated to correct the syntax

Question

# Objective function
APP_model.objective = xsum(p[i][t]*P[i][t]  for i in N for t in T) + \\
                      xsum(o[i][t]*O[i][t]  for i in N for t in T) +  \\