Python mengiris elemen kedua daftar daftar
import numpy as np
A = np.array([[1,2,3,4,5],[1,2,3,4,5],[1,2,3,4,5]])
A[:,:3]
Out[3]:
array([[1, 2, 3],
[1, 2, 3],
[1, 2, 3]])
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