Method _add_writer

Lib/test/test_asyncio/utils.py:417–418

(self, fd, callback, *args, context=None)

            raise AssertionError(f'fd {fd} is registered')

    def _add_writer(self, fd, callback, *args, context=None):
        self.writers[fd] = events.Handle(callback, args, self, context)

    def _remove_writer(self, fd):
        self.remove_writer_count[fd] += 1