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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def register(host=DFLT_ADDRESS[0], port=DFLT_ADDRESS[1], signum=signal.SIGUSR1):
 """Register a pdb handler for signal 'signum'. The handler sets pdb to listen on the ('host', 'port') internet address and to start a remote debugging session on accepting a socket connection. """

    _pdbhandler._register(host, port, signum)