human
Solve the following python programming problem given the following code:
def django_instance_to_entity(connection, model, fields, raw, instance, check_null = True) : 
    inheritance_root = get_top_concrete_parent (model) 
    db_table = get_datastore_kind (inheritance_root) 
    def value_from_instance(_instance, _field) : 
        value = get_prepared_db_value (connection, _instance, _field, raw) 
        if ((value is None) and _field.has_default () and (not _field.null)) : 
            value = connection.ops.value_for_db (_field.get_default (), _field) 
if (check_null and ((not _field.null) and (not _field.primary_key)) and (value is None)) : 
            raise IntegrityError (("You can't set %s (a non-nullable field) to None!" % _field.name)) 
is_primary_key = False 
        if (_field.primary_key and (_field.model == inheritance_root)) : 
            is_primary_key = True 
return (value, is_primary_key) 
field_values = { 
        
} 
    primary_key = None 
    for field in fields : 
        (value, is_primary_key) = value_from_instance (instance, field) 
        if is_primary_key : 
            primary_key = value 
else : 
            field_values [field.column] = value 
for index in special_indexes_for_column (model, field.column) : 
            indexer = REQUIRES_SPECIAL_INDEXES [index.split ('__') [0]] 
            values = indexer.prep_value_for_database (value, index) 
            if (values is None) : 
                continue 
if (not hasattr (values, '__iter__')) : 
                values = [values] 
for v in values : 
                column = indexer.indexed_column_name (field.column, v, index) 
                if (column in field_values) : 
                    if (not isinstance (field_values [column], list)) : 
                        field_values [column] = [field_values [column], v] 
else : 
                        field_values [column].append (v) 
else : 
                    field_values [column] = connection 
kwargs = { 
        
} 
    if primary_key : 
        if isinstance (primary_key, (int, long)) : 
            kwargs ['id'] = primary_key 
else : 
    ...

    
    

    Fix the buggy line: field_values [column] = connection
assistant
#Here is Python program to fix the buggy line: field_values [column] = connection
.

field_values [column] = v