関連ワード:  change an element in a list python    replace an element in a list python    modify an element in a list python    modify an existing element in a list python    change items in a list python    change the position of an element in a list python    how to edit an element in a list python    how to replace an element in a list python by index    how to change an element in a nested list python    replace all occurrences of an element in a list python