Make the first dataclass example more useful (GH-19994) (GH-19998)

miss-islington · nedbat · web-flow · commit 5d555fa4ef49 · 2020-05-08T07:52:48.000-04:00
(cherry picked from commit 2effef7) Co-authored-by: Ned Batchelder <ned@nedbatchelder.com> Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>
diff --git a/Doc/library/dataclasses.rst b/Doc/library/dataclasses.rst
@@ -19,6 +19,8 @@ in :pep:`557`.
 The member variables to use in these generated methods are defined
 using :pep:`526` type annotations.  For example this code::
 
+  from dataclasses import dataclass
+
   @dataclass
   class InventoryItem:
       '''Class for keeping track of an item in inventory.'''
