41 lines
952 B
Python
41 lines
952 B
Python
try:
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import socket, select, errno
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select.poll # Raises AttributeError for CPython implementations without poll()
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except (ImportError, AttributeError):
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print("SKIP")
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raise SystemExit
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poller = select.poll()
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s = socket.socket()
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poller.register(s)
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# https://docs.python.org/3/library/select.html#select.poll.register
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# "Registering a file descriptor that’s already registered is not an error,
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# and has the same effect as registering the descriptor exactly once."
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poller.register(s)
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poller.register(s, select.POLLIN | select.POLLOUT)
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# 2 args are mandatory unlike register()
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try:
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poller.modify(s)
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except TypeError:
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print("modify:TypeError")
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poller.modify(s, select.POLLIN)
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poller.unregister(s)
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try:
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poller.modify(s, select.POLLIN)
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except OSError as e:
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assert e.errno == errno.ENOENT
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# poll after closing the socket, should return POLLNVAL
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poller.register(s)
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s.close()
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p = poller.poll(0)
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print(len(p), p[0][-1])
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