関連ワード:  is 0 truthy in python    is 0 false in python    is 0 falsy in python    is 0 true in python    does 0 == false in python    is 0 truthy or falsy in python    is 0 true or false in python    is 0 or 1 true in python    is 0 equal to false in python    does 0 mean false in python