関連ワード:  how to make an array in python numpy    how to define an array in python numpy    how to make an array in python without numpy    how to make an empty array in python numpy    how to make 2d array in python numpy    how to make an np array in python    how to make a 2d array in python using numpy    how to define an empty numpy array in python    how to create 3d array in python using numpy    how to create multidimensional array in python using numpy