def fileno(self, handle):
        fo = self._files.get(handle, None)
        if fo:
            return fo.fileno()
File descriptors returned by L{_listOpenFDs} are mostly open.
dataset/ETHPy150Open kdart/pycopia/QA/pycopia/remote/PosixServer.py/PosixAgent.fileno--crossover with--dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/internet/test/test_posixprocess.py/FileDescriptorTests.test_openFDs