Returns the sum of the values associated with keys that match the
specified pattern. If the values are Gurobi
Var objects, the
result is a
LinExpr. The pattern should provide one value for
each field in the key tuple. A
'*' value indicates that any
value is accepted in that field.
Without arguments, this method returns the sum of all values in the
pattern: Pattern to match for a key tuple.
x = m.addVars([(1,2), (1,3), (2,3)]) expr = x.sum() # LinExpr: x[1,2] + x[1,3] + x[2,3] expr = x.sum(1, '*') # LinExpr: x[1,2] + x[1,3] expr = x.sum('*', 3) # LinExpr: x[1,3] + x[2,3] expr = x.sum(1, 3) # LinExpr: x[1,3]