At best it shows that deprecations are complicated no matter how well you plan them. I remember that "noisy by default" deprecation warnings were widely despised.

On Tue, Jan 18, 2022 at 6:49 AM Antoine Pitrou <> wrote:
On Tue, 18 Jan 2022 15:17:41 +0100
Victor Stinner <> wrote:
> Hi,
> My colleagues Tomáš Hrnčiar and Miro Hrončok made good progress on
> updating Python 3.10 to Python 3.11 in Fedora, but some specific
> Python 3.11 incompatible changes are causing more troubles than
> others:
> We propose to revert the following 2 changes in Python 3.11 and
> postpone them in a later Python version, once most projects will be
> compatible with these changes:
> * Removal of unittest aliases (bpo-45162): it broke 61 Fedora packages
> * Removals from configparser module (bpo-45173) - broke 28 Fedora packages

Doesn't this show, once again, that making DeprecationWarning silent by
default was a mistake?

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