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Python

from scipy.optimize import minimize, Bounds
def test_gh10880():
# checks that verbose reporting works with trust-constr
bnds = Bounds(1, 2)
opts = {'maxiter': 1000, 'verbose': 2}
minimize(lambda x: x**2, x0=2., method='trust-constr', bounds=bnds, options=opts)
opts = {'maxiter': 1000, 'verbose': 3}
minimize(lambda x: x**2, x0=2., method='trust-constr', bounds=bnds, options=opts)