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How to convert 1D array to 2D array in Python?

arr = np.array([ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]). newarr = arr.reshape( 4 , 2 ). print (newarr). [[1 2] [3 4] [5 6] [7 8]]. 2 Rows with 4 Cols.

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