関連ワード:  what is use of string in python    what is use of f string in python    what is the main use of string in python    what is the use of raw string in python    what is the use of formatted string in python    what is the use of string function in python    what is the use of string module in python    what is the use of empty string in python    what is the use of string data type in python    why do we use string in python