Hi.
the augmented assignment version allows anything the ``update`` method allows, such as iterables of key/value pairs
I am a little surprised by this choice. First, this means that "a += b" would not be equivalent to "a = a + b". Is there other built-in types which act differently if called with the operator or augmented assignment version? Secondly, that would imply I would no longer be able to infer the type of "a" while reading "a += [('foo', 'bar')]". Is it a list? A dict? Those two points make me uncomfortable with "+=" strictly behaving like ".update()". 2019-03-04 17:44 UTC+01:00, Rhodri James <rhodri@kynesim.co.uk>:
On 04/03/2019 15:12, James Lu wrote:
On Mar 4, 2019, at 10:02 AM, Stefan Behnel <stefan_ml@behnel.de> wrote:
INADA Naoki schrieb am 04.03.19 um 11:15:
Why statement is not enough?
I'm not sure I understand why you're asking this, but a statement is "not enough" because it's a statement and not an expression. It does not replace the convenience of an expression.
Stefan There is already an expression for key-overriding merge. Why do we need a new one?
Because the existing one is inobvious, hard to discover and ugly.
-- Rhodri James *-* Kynesim Ltd _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/