quicksum() and sum()

Answered

D

September 27, 2023 19:18

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Is there a difference between suing quicksum() and sum()? would it affect the results? or computational time? or intermediate results if a time limit was added?

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• Python

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  Maliheh Aramon

  • Gurobi Staff

  September 27, 2023 22:32

  Hi, 

  Yes, the \(\texttt{quicksum}\) is a gurobipy global function and the \(\texttt{sum}\) is a python function. The \(\texttt{quicksum}\) is a version of the \(\texttt{sum}\) function and it is faster for building large Gurobi expressions (see the documentation of the \(\texttt{quicksum}\) function for mode details)

  The difference between the\(\texttt{quicksum}\) and \(\texttt{sum}\) functions affects the time it takes to build the model. It has no impact on the time it takes to optimize the model or the values of feasible/optimal solutions.

  Best regards,

  Maliheh

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