I would use it, and I prefer | for the reasons given by Stephen, MRAB, and the other proponents.

On Monday, October 21, 2019 at 1:08:32 AM UTC-4, Andrew Barnert via Python-ideas wrote:

On Oct 20, 2019, at 21:10, Stephen J. Turnbull <turnbull...@u.tsukuba.ac.jp> wrote:
>
> I'm not against having an operator for updating dicts, but "+" is not
> it.  "|" is fine, though.

It seems like people who don’t really like this feature and don’t plan to use it mostly really want it to be spelled | if it has to be added. But people who are dying for it mostly want + (except for the ones who want all the set operators). I’m not sure what that means…

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