関連ワード:  how to create 2d array in numpy    how to create 2d array in numpy python    how to create 2 dimensional array in numpy    how to create multidimensional array in numpy    how to create empty 2d array in numpy    how to create 2d array in python using numpy    how to create a 2d matrix in numpy    how to create multidimensional array in python using numpy    how to create 1d 2d and 3d array in numpy    how to create 2d numpy array from list