Context manager with __exit__ having access __enter__'s returned value

.py

from functools import lru_cache


class File:
    def __init__(self, filename, mode):
        self.filename = filename
        self.mode = mode

    @lru_cache(1)
    def __enter__(self):
        return open(self.filename, self.mode)

    def __exit__(self, *args):
        self.__enter__().close()

This is actually really bad code and this pattern should be used instead.