bpo-42360: Add advice to help avoid pickling issues. (GH-23305) (GH-23429)

2020-11-20 13:19:49 -08:00 · 2020-11-20 13:19:49 -08:00 · f552f4b2d6
parent 4dd2112a1d
commit f552f4b2d6
1 changed files with 3 additions and 0 deletions
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@ -849,6 +849,9 @@ they add the ability to access fields by name instead of position index.
    Named tuple instances do not have per-instance dictionaries, so they are
    lightweight and require no more memory than regular tuples.

+    To support pickling, the named tuple class should be assigned to a variable
+    that matches *typename*.
+
    .. versionchanged:: 3.1
       Added support for *rename*.