Sounds like a hallucination or fabrication. The behavior of `for i in range(10): i` in the REPL exists to this day, and list.append() never returned a value. The only thing I'm only 90% sure of is whether the REPL always ignored None values.
On Sun, Jan 19, 2020 at 11:58 AM Tim Peters <tim.pet...@gmail.com> wrote: > [David Mertz <me...@gnosis.cx>] > > ... > > What we get instead is a clear divide between mutating methods > > on collections that (almost) always return None, and functions > > like sorted() and reversed() that return copies of the underlying > > collection/iterable. Of course, there are many methods that don't > > have functions matching them. Python could have been designed > > differently, but using the consistency it follows is best. > > For a bit of history that I may have made up (heh - memory fades over > time!), as I recall, the very first Python pre-releases echoed to > stdout every non-None statement result. So, e.g., > > for i in range(5): > i > > displayed the same as the current > > for i in range(5): > print(i) > > But one prolific early user loved chaining mutating method calls, each > returning `self`, and so their output was littered with crap they > didn't want to see. They didn't want to prefix every computational > statement with, e.g., "ignore = ", so Guido stopped the magical > output. > > Perhaps surprisingly, few people noticed the difference. But that may > in large part be due to that there were few people, period. > > Or I'm just hallucinating again :-) > _______________________________________________ > 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/WOKUBTEZEXCX5HE4TKJ5GG73ILVO6LMK/ > Code of Conduct: http://python.org/psf/codeofconduct/ > -- --Guido van Rossum (python.org/~guido) *Pronouns: he/him **(why is my pronoun here?)* <http://feministing.com/2015/02/03/how-using-they-as-a-singular-pronoun-can-change-the-world/>
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