test_fileio.py 文件源码

def testUnclosedFDOnException(self):
        class MyException(Exception): pass
        class MyFileIO(_FileIO):
            def __setattr__(self, name, value):
                if name == "name":
                    raise MyException("blocked setting name")
                return super(MyFileIO, self).__setattr__(name, value)
        fd = os.open(__file__, os.O_RDONLY)
        self.assertRaises(MyException, MyFileIO, fd)
        os.close(fd)  # should not raise OSError(EBADF)