resolver_thread.py 文件源码

def __init__(self, hub=None):
        if hub is None:
            hub = get_hub()
        self.pool = hub.threadpool
        if _socket.gaierror not in hub.NOT_ERROR:
            # Do not cause lookup failures to get printed by the default
            # error handler. This can be very noisy.
            hub.NOT_ERROR += (_socket.gaierror, _socket.herror)