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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 targets(tgt, tgt_type='glob', **kwargs):  # pylint: disable=W0613
    '''
    Return the targets from the Salt Masters' minion cache.
    All targets and matchers are supported.

    The resulting roster can be configured using ``roster_order`` and ``roster_default``.
    '''
    minions = salt.utils.minions.CkMinions(__opts__)
    _res = minions.check_minions(tgt, tgt_type)
    minions = _res['minions']

    ret = {}
    if not minions:
        return ret
    # log.debug(minions)

    cache = salt.cache.Cache(__opts__)

    roster_order = __opts__.get('roster_order', {
        'host': ('ipv6-private', 'ipv6-global', 'ipv4-private', 'ipv4-public')
    })

    ret = {}
    for minion_id in minions:
        try:
            minion = _load_minion(minion_id, cache)
        except LookupError:
            continue

        minion_res = copy.deepcopy(__opts__.get('roster_defaults', {}))
        for param, order in roster_order.items():
            if not isinstance(order, (list, tuple)):
                order = [order]
            for key in order:
                kres = _minion_lookup(minion_id, key, minion)
                if kres:
                    minion_res[param] = kres
                    break

        if 'host' in minion_res:
            ret[minion_id] = minion_res
        else:
            log.warning('Could not determine host information for minion %s', minion_id)

    log.debug('Roster lookup result: %s', ret)

    return ret