paramiko会话命令输出和输入出现问题。标准输入，标准输出，标准错误= session.exec_command（'显示端口'）

Question

Traceback (most recent call last):
  File "<pyshell#23>", line 1, in <module>
    stdin, stdout, stderr = session.exec_command('show port')
  File "C:\Users\sougoyal\AppData\Local\Programs\Python\Python37-32\lib\site-packages\paramiko\client.py", line 499, in exec_command
    chan.exec_command(command)
  File "C:\Users\sougoyal\AppData\Local\Programs\Python\Python37-32\lib\site-packages\paramiko\channel.py", line 72, in _check
    return func(self, *args, **kwds)
  File "C:\Users\sougoyal\AppData\Local\Programs\Python\Python37-32\lib\site-packages\paramiko\channel.py", line 257, in exec_command
    self._wait_for_event()
  File "C:\Users\sougoyal\AppData\Local\Programs\Python\Python37-32\lib\site-packages\paramiko\channel.py", line 1208, in _wait_for_event
    raise e
  File "C:\Users\sougoyal\AppData\Local\Programs\Python\Python37-32\lib\site-packages\paramiko\transport.py", line 1982, in run
    ptype, m = self.packetizer.read_message()
  File "C:\Users\sougoyal\AppData\Local\Programs\Python\Python37-32\lib\site-packages\paramiko\packet.py", line 441, in read_message
    header = self.read_all(self.__block_size_in, check_rekey=True)
  File "C:\Users\sougoyal\AppData\Local\Programs\Python\Python37-32\lib\site-packages\paramiko\packet.py", line 290, in read_all
    raise EOFError()
EOFError

paramiko会话命令输出和输入存在问题。标准输入，标准输出，stderr = session.exec_command('show port')