Updates documentation on dynamic item classes.

Fixes #398
scrapy · Jan 20, 2015 · eeb589a · eeb589a
1 parent 5fdab02
commit eeb589a
Showing 1 changed file with 2 additions and 4 deletions.
diff --git a/docs/topics/practices.rst b/docs/topics/practices.rst
@@ -159,8 +159,6 @@ classes instead of manually coding them.
     from scrapy.item import DictItem, Field
 
     def create_item_class(class_name, field_list):
-        field_dict = {}
-        for field_name in field_list:
-            field_dict[field_name] = Field()
+        fields = {field_name: Field() for field_name in field_list}
 
-        return type(class_name, (DictItem,), field_dict)
+        return type(class_name, (DictItem,), {'fields': fields})