[issue42809] Improve pickle tests for recursive data

[miss-islington]

miss-islington <mariatta.wijaya+miss-islington at gmail.com> added the comment:


New changeset 39a7578186d2f5eaa112a5854c46f84eae401522 by Miss Islington (bot) in branch '3.9':
bpo-42809: Improve pickle tests for recursive data. (GH-24060)
https://github.com/python/cpython/commit/39a7578186d2f5eaa112a5854c46f84eae401522


----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42809>
_______________________________________