From: Paul Rubin <no.email@nospam.invalid>
Subject: Re: [Off-Topic] Python gets :=
Date: Sat, 21 Jul 2018 09:34:32 -0700
Date: 2018-07-21T09:34:32-07:00 [thread overview]
Message-ID: <87lga4fsyv.fsf@nightsong.com> (raw)
In-Reply-To: pivhvs$9sk$1@dont-email.me
Rene <rehartmann@t-online.de> writes:
> So it would more logical the other way round: = for assignment
> expression and := for assignment. But of course this is not possible
> because of backwards compatibility.
In principle it's fine to use the same symbol for both. GvR picked =
for assignment, and then didn't want to use it for assignment
expressions because of the possible bug where someone says "if a=b"
(assignment) when they meant "if a==b" (comparison). So he decided to
not have assignment expressions at all. That lack was a source of 20
years of conflict in the Python community. Finally he accepted the :=
proposal and that set off enough conflict in its own right, that he
stepped down as BDFL (leader) of Python.
prev parent reply other threads:[~2018-07-21 16:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-20 21:56 [Off-Topic] Python gets := Alejandro R. Mosteo
2018-07-21 5:47 ` Nasser M. Abbasi
2018-07-21 7:50 ` Paul Rubin
2018-07-21 8:37 ` G.B.
2018-07-21 10:31 ` Chris M Moore
2018-07-21 15:03 ` Rene
2018-07-21 16:34 ` Paul Rubin [this message]
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