`numpy:fliplr`

Signature

def fliplr ( m )

Reverse the order of elements along axis 1 (left/right).

For a 2-D array, this flips the entries in each row in the left/right direction. Columns are preserved, but appear in a different order than before.

f : ndarray: A view of m with the columns reversed. Since a view is returned, this operation is $O (1)$ .

Equivalent to m[:,::-1] or np.flip(m, axis=1). Requires the array to be at least 2-D.

import numpy as np
A = np.diag([1.,2.,3.])

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A
np.fliplr(A)

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rng = np.random.default_rng()
A = rng.normal(size=(2,3,5))

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np.all(np.fliplr(A) == A[:,::-1,...])

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