Could someone please explain to me what is happening here? I understand what is happening here: <a href="https://docs.scipy.org/doc/numpy-1.15.0/user/basics.indexing.html#index-arrays" target="_blank">https://docs.scipy.org/doc/numpy-1.15.0/user/basics.indexing.html#index-arrays</a>, but do not understand this piece of code.

Could someone please explain to me what is happening here? I understand what is happening here: https://docs.scipy.org/doc/numpy-1.15.0/user/basics.indexing.html#index-arrays, but do not understand this piece of code.

import numpy as np y = np.zeros((3,3)) y = y.astype(np.int16) y[1,1] = 1 x = np.ones((3,3)) t = (1-y).astype(np.int16) print(t) print(x[t]) x[(1-y).astype(np.int16)] = 0 print(x)

output:

[[1 1 1] [1 0 1] [1 1 1]][[[1. 1. 1.] [1. 1. 1.] [1. 1. 1.]]

[[1. 1. 1.] [1. 1. 1.] [1. 1. 1.]]

[[1. 1. 1.] [1. 1. 1.] [1. 1. 1.]]]

[[0. 0. 0.] [0. 0. 0.] [1. 1. 1.]]

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