Method add_writer

Lib/test/test_asyncio/utils.py:464–467

Add a writer callback..

(self, fd, callback, *args)

        return self._remove_reader(fd)

    def add_writer(self, fd, callback, *args):
        """Add a writer callback.."""
        self._ensure_fd_no_transport(fd)
        return self._add_writer(fd, callback, *args)

    def remove_writer(self, fd):
        """Remove a writer callback."""