On Sat, Sep 07, 2019 at 12:35:09AM -0300, Joao S. O. Bueno wrote:

> Well - the idea showed up here, and got an immediate "that is nice, let's
> do it" from you, followed by approval from a lot more people, and
> very little controverse. So, it is pretty much "approved", even if not yet
> detailed in an approved PEP. 

As the PEP author, I don't consider it even close to approved. I'm still 
slowly working my way through the next draft of the PEP. There are lots 
of objections and unresolved questions:

- is this feature necessary?

- if so, should it be an operator, a dict method or a function?

- if an operator, should it be spelled ``+`` or ``|`` or something else?

- what precise behaviour should it have?

At the time I wrote the first draft, there was no consensus that the 
feature was necessary, but most people who thought it would be useful 
agreed that ``+`` was the right operator. Since then, further discussion 
seemed to shift closer to consensus that the feature might be useful, 
but away from using ``+``.



-- 
Steven
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