如何在CPLEX上编辑关于元组的代码？

import cplex

model = cplex.Cplex()

var_names = ["x1", "x2", "x3"]
var_obj = [1.0, 2.0, 3.0]
var_ub = [10.0, 10.0, 10.0]
var_lb = [0.0, 0.0, 0.0]

# 使用元组定义变量
for i in range(len(var_names)):
    model.variables.add(names=[var_names[i]], obj=[var_obj[i]], ub=[var_ub[i]], lb=[var_lb[i]])

# 添加目标函数
model.objective.set_linear(var_names, var_obj)

# 添加约束条件
constraint_names = ["c1", "c2"]
constraint_senses = ["L", "G"]
constraint_rhs = [10.0, 5.0]
constraint_coeffs = [[1.0, 1.0, 1.0], [2.0, 2.0, 2.0]]

# 使用元组定义约束条件
for i in range(len(constraint_names)):
    model.linear_constraints.add(lin_expr=[cplex.SparsePair(var_names, constraint_coeffs[i])],
                                 senses=[constraint_senses[i]], rhs=[constraint_rhs[i]],
                                 names=[constraint_names[i]])

model.solve()
print("最优解：", model.solution.get_objective_value())
print("变量取值：", model.solution.get_values())