代码高亮测试2

又一个代码高亮测试，使用pre class=python来看看

class BaseHandler(tornado.web.RequestHandler):
    @property
    def rep(self):
        return self.application.rep

    def get_current_user(self):
        user_name=self.get_secure_cookie("user")
        if self.application.user.has_key(user_name):
            return user_name
        return None