ndarray.__array_wrap__(obj) ? Object of same type as ndarray object a.
ndarray.trace(offset=0, axis1=0, axis2=1, dtype=None, out=None) Return the sum along diagonals of the array. Refer
ndarray.argpartition(kth, axis=-1, kind='introselect', order=None) Returns the indices that would partition this array
ndarray.repeat(repeats, axis=None) Repeat elements of an array. Refer to
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