関連ワード:  how to scan a variable in python    how to check a variable in python    how to check a variable type in python    how to check a variable exists in python    how to check if a variable in python is an integer    how to check a variable value in python    how to check if a variable in python is none    how to check datatype of a variable in python    how to check size of a variable in python    how to check a variable is empty in python