https://github.com/python/cpython/commit/9fc319dc033fa32d298fe1c3f171b3d011ac04f0 commit: 9fc319dc033fa32d298fe1c3f171b3d011ac04f0 branch: master author: Raymond Hettinger <rhettinger at users.noreply.github.com> committer: rhettinger <rhettinger at users.noreply.github.com> date: 2020年11月20日T12:49:32-08:00 summary: bpo-42360: Add advice to help avoid pickling issues. (GH-23305) files: M Doc/library/collections.rst diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst index f538da5e1c9fa..1293f542b0437 100644 --- a/Doc/library/collections.rst +++ b/Doc/library/collections.rst @@ -862,6 +862,9 @@ 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*.