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Networking and Interprocess Communication
Returns a polling object.
This object supports registering and unregistering file descriptors, and
then polling them for I/O events. Members of poll m modify Modifies an already registered fd. p poll Polls the set of registered file descriptors, and returns a possibly empty list containing (fd, event) 2-tuples for the descriptors that have events or errors to report. r register Register a file descriptor with the polling object. u unregister Remove a file descriptor being tracked by a polling object.
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