Method ensure_closed

Lib/test/test_interpreters/utils.py:389–393

(fd)

    def pipe(self):
        def ensure_closed(fd):
            try:
                os.close(fd)
            except OSError:
                pass
        r, w = os.pipe()
        self.addCleanup(lambda: ensure_closed(r))
        self.addCleanup(lambda: ensure_closed(w))