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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 instance_ip_grouping_key():
 """Grouping key with instance set to the IP Address of this host."""

    with closing(socket.socket(socket.AF_INET, socket.SOCK_DGRAM)) as s:
        s.connect(('localhost', 0))
        return {'instance': s.getsockname()[0]}