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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 ip_address_list(ips):
 """ IP address range validation and expansion. """

    # first, try it as a single IP address
    try:
        return ip_address(ips)
    except ValueError:
        pass
    # then, consider it as an ipaddress.IPv[4|6]Network instance and expand it
    return list(ipaddress.ip_network(u(ips)).hosts())