関連ワード:  how to check if a variable is null in python    how to check if a variable is empty in python    how to check if a variable is none in python    how to check if a variable is not null in python    how to check if a variable is null or empty in python    how to check if a variable is not none in python    how to check if a variable is not empty in python    how to check if a string variable is empty in python    how to check if an integer variable is empty in python  
結果 : how to check if a variable is null in python