関連ワード:  how to create a 2 d array in python    how to create 2 dimensional array in python using numpy    how to write 2 dimensional array in python    how to create an empty 2 dimensional array in python    how to create a 2d array in python using for loop    how to create a 2d array in python numpy    how to create a 2d array in python w3schools    how to create a random 2d array in python    how to create a dynamic 2d array in python    how to create a empty 2d array in python