numpy create array of the max of consecutive pairs in another array

A loop-free solution is to use max on the windows created by skimage.util.view_as_windows:

list(map(max, view_as_windows(A, (2,))))

[8, 33, 33, 4, 6]

Copy/pastable example:

import numpy as np
from skimage.util import view_as_windows

A = np.array([8, 2, 33, 4, 3, 6])

list(map(max, view_as_windows(A, (2,))))

One solution to the pairwise problem is using the np.maximum function and array slicing:

B = np.maximum(A[:-1], A[1:])

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