Python运行时增加实例方法

import types

async def _new_page(self) -> SafePage:
    print("*" * 20)
    page = await self.new_page()
    return SafePage(page)

class Example:
    def __init__(self):
        self.context = Context()
        self.context.new_safe_page = types.MethodType(_new_page, self.context)