関連ワード:  check if string is empty or none python    check if string is empty or null python    check if string is empty or not python    check string is empty or not python    python check if string is not empty or none    python check if string is not empty    check if string is not null python    check if string is null python    python program to check if string is empty or not    python check if variable is empty string or none  
結果 : check if string is empty or none python