関連ワード:  how to define a array in python    how to declare a array in python    how to initialize a array in python    how to define a 2d array in python    how to define a numpy array in python    how to define a string array in python    how to define a 3d array in python    how to define a empty array in python    how to define a 2d array in python using numpy    how to define a multidimensional array in python