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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_nets_lacnic(self, response):
 """ The function for parsing network blocks from LACNIC whois data. Args: response (:obj:`str`):
 The response from the LACNIC whois server. Returns: list of dict: Mapping of networks with start and end positions. :: [{ 'cidr' (str) - The network routing block 'start' (int) - The starting point of the network 'end' (int) - The endpoint point of the network }] """


        nets = []

        # Iterate through all of the networks found, storing the CIDR value
        # and the start and end positions.
        for match in re.finditer(
            r'^(inetnum|inet6num|route):[^\S\n]+(.+?,[^\S\n].+|.+)$',
            response,
            re.MULTILINE
        ):

            try:

                net = copy.deepcopy(BASE_NET)
                net_range = match.group(2).strip()

                try:

                    net['range'] = net['range'] = '{0} - {1}'.format(
                        ip_network(net_range)[0].__str__(),
                        ip_network(net_range)[-1].__str__()
                    ) if '/' in net_range else net_range

                except ValueError:  # pragma: no cover

                    net['range'] = net_range

                temp = []
                for addr in net_range.split(', '):

                    count = addr.count('.')
                    if count is not 0 and count < 4:

                        addr_split = addr.strip().split('/')
                        for i in range(count + 1, 4):
                            addr_split[0] += '.0'

                        addr = '/'.join(addr_split)

                    temp.append(ip_network(addr.strip()).__str__())

                net['cidr'] = ', '.join(temp)
                net['start'] = match.start()
                net['end'] = match.end()
                nets.append(net)

            except ValueError:

                pass

        return nets