On 2019-02-19 04:04, Steve Dower wrote:
On 18Feb.2019 1324, Jeroen Demeyer wrote:
For a very concrete example, was it really necessary to put
_PyTuple_ITEMS in (4)? That's used in _functoolsmodule.c. Especially
given that the very similar PySequence_Fast_ITEMS is in (2), that seems
like a strange and arbitrary limiting choice.
The reason to do this is that we can "guarantee" that we've fixed all
users when we change the internal representation.
I think that CPython should then at least "eat its own dog food" and
don't use any of the internal functions/macros when implementing the
stdlib. As I said before: if a function/macro is useful for implementing
stdlib functionality like "functools" or "json", it's probably useful
for external modules too.
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