> On 3 Nov 2019, at 16:50, Andrew Barnert <abarn...@yahoo.com> wrote: > > >> >>> On Nov 3, 2019, at 16:07, Anders Hovmöller <bo...@killingar.net> wrote: >>> >>>> On 3 Nov 2019, at 13:31, Andrew Barnert <abarn...@yahoo.com> wrote: >>> >>> On Nov 3, 2019, at 13:01, Anders Hovmöller <bo...@killingar.net> wrote: >>>> >>>> Well, the last part requires that print can coerce bytes to str, not >>>> strictly that it must do so via str(). repr() should return b'foo' but >>>> str() could have returned <bytes object at 0x6363737>. >>> >>> That would be very confusing. >> >> >> Why? Because you then say: >> >>> When they differ, it’s always repr that returns something like <bytes >>> object at 0x6363737>, as object.__repr__ gives. The only time you get that >>> from str is on types without a __str__ method that fall back to __repr__. >> >> And str of bytes deviate from this in that it returns what should be a repr, >> not a str. > > It doesn’t deviate. When they differ, it’s always repr that returns the > angle-bracket format. When they don’t differ, they obviously don’t differ. > Since bytes doesn’t differ, it follows that rule just fine. > > The rules are pretty simple: (1) __repr__ returns either something eval-able > if feasible or something angle-brackety if not; bytes follows this rule by > returning something eval-able. (2) __str__ returns either something more > human-readable if reasonable, or falls back to __repr__ if not; bytes follows > this by falling back to __repr__. > > Your proposal is to make __str__ return something _less_ human-readable, and, > worse, something that looks like a repr. That would be confusing.
It's not a proposal though. It's way too late to change this now. I'm just saying the situation for the switch wasn't ideal. I think we all agree on that but for different reasons ;) / Anders _______________________________________________ Python-ideas mailing list -- python-ideas@python.org To unsubscribe send an email to python-ideas-le...@python.org https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/python-ideas@python.org/message/QA5JHTU3FPCTMNWSZUVTWUCFWQZOYQE4/ Code of Conduct: http://python.org/psf/codeofconduct/
