human
Solve the following python programming problem given the following code:
def Deserializer(object_list, **options) : 
    "
    Deserialize simple Python objects back into Django ORM instances.

    It's expected that you pass the Python objects themselves (instead of a
    stream or a string) to the constructor
    " 
    db = options.pop ('using', DEFAULT_DB_ALIAS) 
    models.get_apps () 
    for d in object_list : 
        Model = _get_model (d ['model']) 
        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 (db, options.get ('encoding', settings.DEFAULT_CHARSET), strings_only = True) 
field = Model._meta.get_field (field_name) 
            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] 
else : 
                if (field.rel and isinstance (field.rel, models.ManyToOneRel)) : 
                    if (field_value is not None) : 
                        if hasattr (field.rel.to._default_manager, 'get_by_natural_key') : 
                            if hasattr (field_value, '__iter__') : 
                                obj = field.rel.to._default_manager.db_manager (db).get_by_natural_key (* field_value) 
                                value = getattr (obj, field.rel.field_name) 
                                if field.rel.to._meta.pk.rel : 
               ...

    
    

    Fix the buggy line: field_value = smart_unicode (db, options.get ('encoding', settings.DEFAULT_CHARSET), strings_only = True)
assistant
#Here is Python code to fix the buggy line: field_value = smart_unicode (db, options.

field_value = smart_unicode (field_value, options.get ('encoding', settings.DEFAULT_CHARSET), strings_only = True)