関連ワード:  how to use a function in python    how to use a function in python from another file    how to call a function in python    how to call a function in python with arguments    how to call a function in python from another file    how to call a function in python example    how to call a function in python from command line    how to call a function in python with return    how to use a method in python    how to call a function in python without arguments