human
Here's a good function header given the following:
I wrote the below code

    db = options.pop('using', DEFAULT_DB_ALIAS)
    src_version = options.pop('src_version')
    dest_version = options.pop('dest_version')
    assert dest_version, 'For    KA    Lite,    we    should    always    set    the    dest    version    to    the    current    device.'
    models.get_apps()
    for d in object_list:
        Model = _get_model(d['model'])
        if hasattr(Model, 'version'):
            v_diff = version_diff(Model.minversion, dest_version)
            if ((v_diff > 0) or (v_diff is None)):
                continue
        data = {Model._meta.pk.attname: Model._meta.pk.to_python(d['pk'])}
        m2m_data = {}
        for (field_name, field_value) in d['fields'].iteritems():
            if isinstance(field_value, str):
                field_value = smart_unicode(field_value, options.get('encoding', settings.DEFAULT_CHARSET), strings_only=True)
            try:
                field = Model._meta.get_field(field_name)
            except models.FieldDoesNotExist as fdne:
                v_diff = version_diff(src_version, dest_version)
                if ((v_diff > 0) or (v_diff is None)):
                    continue
                else:
                    raise fdne
            if (field.rel and isinstance(field.rel, models.ManyToManyRel)):
                if hasattr(field.rel.to._default_manager, 'get_by_natural_key'):
                    def m2m_convert(value):
                        if hasattr(value, '__iter__'):
                            return field.rel.to._default_manager.db_manager(db).get_by_natural_key(*value).pk
                        else:
                            return smart_unicode(field.rel.to._meta.pk.to_python(value))
                else:
                    m2m_convert = (lambda v: smart_unicode(field.rel.to._meta.pk.to_python(v)))
                m2m_data[field.name] = [m2m_convert(pk) for pk in field_value]
            elif (field.rel and isinstance(field.rel, models.ManyToOneRel)):
                if (field_value is not None):
                    if...

What's a good function header?
assistant
#Here's a good function header.

def Deserializer(object_list, **options):