scipy.optimize.linesearch deprecation warning

[jrmaddison]

Use of objects in scipy.optimize.linesearch raises a deprecation warning with SciPy 1.8.0

[bearecinos]

I have a comment on this ... do we need to then just write
scipy.optimize.line_search directly in:

def line_search_rank0_scipy_scalar_search_wolfe1(
        F, Fp, c1, c2, old_F_val=None, old_Fp_val=None, **kwargs):
    from scipy.optimize.linesearch import scalar_search_wolfe1 as line_search
    alpha, phi, phi0 = line_search(
        F, Fp,
        phi0=old_F_val, derphi0=old_Fp_val, c1=c1, c2=c2,
        **kwargs)
    if alpha is None:
        phi = None
    return alpha, phi

like

def line_search_rank0_scipy_scalar_search_wolfe1(
        F, Fp, c1, c2, old_F_val=None, old_Fp_val=None, **kwargs):
    from scipy.optimize import line_search
    alpha, phi, phi0 = line_search(
        F, Fp,
        phi0=old_F_val, derphi0=old_Fp_val, c1=c1, c2=c2,
        **kwargs)
    if alpha is None:
        phi = None
    return alpha, phi