Make the first dataclass example more useful (GH-19994) (GH-19997)

(cherry picked from commit 2effef7453986bf43a6d921cd471a8bc0722c36a)

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
index 37258d4ebc73869cc3cec829b995969db214ab50..10edcac7e8a9b67fadc0a87a3deea43cb3e379d6 100644 (file)
--- 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.'''