文件输出时使用 sys.stdout.close() 保存后报错：

[SpyderKernelApp] ERROR | Exception in message handler:
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", line 268, in dispatch_shell
    yield gen.maybe_future(handler(stream, idents, msg))
  File "C:\ProgramData\Anaconda3\lib\site-packages\tornado\gen.py", line 762, in run
    value = future.result()
  File "C:\ProgramData\Anaconda3\lib\site-packages\tornado\gen.py", line 775, in run
    yielded = self.gen.send(value)
  File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", line 550, in execute_request
    sys.stdout.flush()
ValueError: I/O operation on closed file.
[SpyderKernelApp] ERROR | Error in message handler
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", line 381, in dispatch_queue
    yield self.process_one()
  File "C:\ProgramData\Anaconda3\lib\site-packages\tornado\gen.py", line 762, in run
    value = future.result()
  File "C:\ProgramData\Anaconda3\lib\site-packages\tornado\gen.py", line 769, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", line 365, in process_one
    yield gen.maybe_future(dispatch(*args))
  File "C:\ProgramData\Anaconda3\lib\site-packages\tornado\gen.py", line 762, in run
    value = future.result()
  File "C:\ProgramData\Anaconda3\lib\site-packages\tornado\gen.py", line 769, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:\ProgramData\Anaconda3\lib\site-packages\ipykernel\kernelbase.py", line 277, in dispatch_shell
    sys.stdout.flush()
ValueError: I/O operation on closed file.