関連ワード:  how to access 2d array in python    how to use 2d array in python    how to access multidimensional array in python    how to get 2d array in python    how to access 2d array elements in python    how to use multidimensional array in python    how to get 2d array input in python    how to get 2d array length in python    how to get size of 2d array in python    how to get index of 2d array in python