numpy.triu() in Python
numpy.triu(a, k = 0) : Returns copy of array with upper part of the triangle w.r.t k
a : input array k : [int, optional, 0 by default] Diagonal we require; k>0 means diagonal above main diagonal or vice versa.
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Upper triangle of a, having same shape and data-type as a.
Main Diagonal elements : [[ 1 21 30] [ 0 434 3] [ 0 0 56]] Diagonal above main Diagonal elements : [[ 0 21 30] [ 0 0 3] [ 0 0 0]] Main Diagonal elements : [[ 1 21 30] [ 63 434 3] [ 0 54 56]]
These NumPy-Python programs won’t run on online ID, so run them on your systems to explore them
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