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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 _get_ipv4_addrs(self):
 """ Returns the IPv4 addresses associated with this NIC. If no IPv4 addresses are used, then empty dictionary is returned. """

        addrs = self._get_addrs()
        ipv4addrs = addrs.get(netifaces.AF_INET)
        if not ipv4addrs:
            return {}
        return ipv4addrs[0]