Please use one of the HiGHS solvers (e.g. `method='highs'`) in new code.

Sure, I can use one of the HiGHS solvers in new code. HiGHS is an open-source linear programming solver that provides high-performance algorithms for solving linear programs. To use HiGHS as the solver in Python, we can use the `highs` module provided by the `scipy` library.

Here's an example of how to use the HiGHS solver in Python:

import numpy as np
from scipy.optimize import linprog

c = np.array([-1, 4])
A = np.array([[3, 1], [1, 2]])
b = np.array([6, 4])

res = linprog(c, A_ub=A, b_ub=b, method='highs')
print(res)

In this example, we define a linear program with objective function `c`, constraint matrix `A`, and right-hand side vector `b`. We then use the `linprog` function from the `scipy.optimize` module and set the `method` parameter to `'highs'` to use the HiGHS solver.

The resulting `res` object contains the solution to the linear program, including the optimal objective value and the values of the decision variables.