関連ワード:  how to use os module in python    how to use os library in python    how to use os package in python    how to create file using os module in python    how to open file using os module in python    how to make directory using os module in python    how to save file using os module in python    how to open folder using os module in python    how to execute command using os module in python    how to delete a file using os module in python