Should spawn.close() set self.pid to None?

[esharakan]

Hi, I have code that subclasses pexpect.spawn. In that code, we loop if the underlying spawned process doesn't connect properly the first time. In that case we call self.close() from the subclass and then loop back to calling the superclass's __init__ method again, where we encounter this:

Traceback (most recent call last):
  File "/opt/SUNWldm/test/memblocks.py", line 241, in testmemblocks
    self.do_testmemblocks()
  File "/opt/SUNWldm/test/memblocks.py", line 338, in do_testmemblocks
    ldom.id - 1, self)
  File "/opt/SUNWldm/test/lib/ldomconsole.py", line 115, in __init__
    encoding='utf-8', codec_errors='ignore')
  File "/usr/lib/python3.7/vendor-packages/pexpect/pty_spawn.py", line 205, in _
_init__
    self._spawn(command, args, preexec_fn, dimensions)
  File "/usr/lib/python3.7/vendor-packages/pexpect/pty_spawn.py", line 283, in _
spawn
    assert self.pid is None, 'The pid member must be None.'
AssertionError: The pid member must be None.

If I explicitly set self.pid to None in my code after calling self.close(), the problem goes away. Shouldn't spawn.close() do that?