wat.py

#!/usr/bin/env python

from __future__ import absolute_import
from __future__ import print_function
from __future__ import unicode_literals


class OneWay(object):
    def close(self):
        print("Here I am, being closed")


class AnotherWay(OneWay):
    def __enter__(self):
        return self

    def __exit__(self, *args):
        self.close()
        return False


if __name__ == "__main__":
    import contextlib
    with contextlib.closing(OneWay()) as ow:
        pass

    with AnotherWay() as aw:
        pass