如何在django / python中使用正则表达式匹配“单词”

I'm using Django/Python and I want to be able to prevent the user from using these words: "login" and "logout" as their username. My current solution is to use a regular expression to check if their input contains the forbidden words (login, logout). If it matters, I'm using a custom I'm using Django/Python and I want to be able t