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