[Python-checkins] Make the first dataclass example more useful (GH-19994) (GH-19997)

[Miss Islington (bot)]

https://github.com/python/cpython/commit/546f643487f5116b795983c951141e0de78a0049
commit: 546f643487f5116b795983c951141e0de78a0049
branch: 3.8
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: GitHub <noreply at github.com>
date: 2020-05-08T07:52:10-04:00
summary:

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

(cherry picked from commit 2effef7453986bf43a6d921cd471a8bc0722c36a)

Co-authored-by: Ned Batchelder <ned at nedbatchelder.com>

Co-authored-by: Ned Batchelder <ned at nedbatchelder.com>

files:
M Doc/library/dataclasses.rst

diff --git a/Doc/library/dataclasses.rst b/Doc/library/dataclasses.rst
index 37258d4ebc738..10edcac7e8a9b 100644
--- 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.'''