cplex添加200<=x<=250约束

您可以使用CPLEX Python API来添加200<=x<=250的约束。以下是一个简单的例子：

import cplex

# Create a CPLEX problem instance
problem = cplex.Cplex()

# Define the variable x
problem.variables.add(obj=[0], lb=[0], ub=[cplex.infinity], names=['x'])

# Add the constraint 200 <= x <= 250
constraint_expr = [['x'], [1]]
constraint_lb = [200]
constraint_ub = [250]
problem.linear_constraints.add(lin_expr=[constraint_expr], senses=['G'], rhs=constraint_lb)
problem.linear_constraints.add(lin_expr=[constraint_expr], senses=['L'], rhs=constraint_ub)

# Solve the problem
problem.solve()

# Print the solution
print('Solution status:', problem.solution.get_status())
print('Solution value:', problem.solution.get_objective_value())
print('Solution x:', problem.solution.get_values('x'))

这个例子定义了一个变量x，并添加了200 <= x <= 250的约束。然后，问题被求解，并打印出最优解。