関連ワード:  how to return an array in python    how to return an array in python function    how to return an empty array in python    how to return an integer array in python    how to return index of an array in python    how to return length of an array in python    how to return two arrays in python    how to return multiple arrays in python    how to return the size of an array in python    how to make a function return an array in python