関連ワード:  how to make a 2d array in python    how to make a 2d array in python numpy    how to make a 2d array in python using numpy    how to do a 2d array in python    how to make a multidimensional array in python    how to create a 2d array in python using for loop    how to create a 2d array in python w3schools    how to make a 2d array 1d in python    how to make a 2d array of zeros in python    how to make empty 2d array in python