関連ワード:  how to find length array in python    how to find array size in python    how to calculate array length in python    how to get the array length in python    how to find length of 2d array in python    how to find length of numpy array in python    how to find length of string array in python    how to see length of array in python    how to see array size in python    how to find size of 2d array in python