[Python-ideas] PEP 505: None-aware operators
Elazar
elazarg at gmail.com
Thu Jul 19 14:43:29 EDT 2018
On Thu, Jul 19, 2018 at 11:37 AM Brendan Barnwell <brenbarn at brenbarn.net>
wrote:
>
> As far as I can see, these null-coalescing operators would break
> that
> model. The PEP doesn't seem to provide for a "real" magic method
> allowing users to override the actual behavior of the method. (You can
> only override __has_value__ to hook into it, but not define by fiat what
> A ?? B does, as you can with other operators.) And I think the reason
> for this is that the operator itself is too specific, much more specific
> in semantics than other operators. (I had similar doubts about adding
> the matrix-multiplication operator @.)
>
It is just as specific as the `is` operator, and for the same reason.
Elazar
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