[issue42470] DeprecationWarning triggers for sequences which happen to be sets as well

[Xavier Morel]

Xavier Morel <xavier.morel at masklinn.net> added the comment:

I was preparing to open the PR but now I'm doubting: should I open the PR against master and miss islington will backport it, or should I open the PR against 3.9?

----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42470>
_______________________________________