Changed custom_methods model test/doc to add explanation of what Article(*row) means, for Python beginners

git-svn-id: http://code.djangoproject.com/svn/django/trunk@363 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/testapp/models/custom_methods.py

@@ -48,6 +48,8 @@ class Article(meta.Model):
             FROM custom_methods_articles
             WHERE pub_date = %s
                 AND id != %s""", [str(self.pub_date), self.id])
+        # The asterisk in "Article(*row)" tells Python to expand the list into
+        # positional arguments to Article().
         return [Article(*row) for row in cursor.fetchall()]
 
 API_TESTS = """