On 2/4/22 6:23 AM, Stefan Behnel wrote:

> One recent example is the new error locations in tracebacks, where PEP 657 
explicitly lists
> the new "co_positions" field in code objects as an implementation detail of 
CPython. If we
> want to implement this in Cython, then there is no other way than to copy 
these implementation
> details pretty verbatimly from CPython and to depend on them.
>
> https://www.python.org/dev/peps/pep-0657/
>
> In this specific case, we're lucky that this can be considered an entirely 
optional feature that we can separately
> disable when users request "public API" mode (let's call it that). Not sure 
if that's what users want, though.

Speaking as a user, I would want Cython to be (in order of preference):

- reliable
- fast
- all the cool Python features

and Python to:

- make public APIs available for Python features

--
~Ethan~
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