[Python-ideas] List-comprehension-like extensions in normal for loops
josiah.carlson at gmail.com
Mon Mar 3 01:35:02 CET 2008
for record in (r for r in db record.name == 'pierre'):
Hello generator expressions (available since Python 2.4). But I'm
with Eyal, personally.
On Sat, Mar 1, 2008 at 2:57 PM, Eyal Lotem <eyal.lotem at gmail.com> wrote:
> How about just nesting the for's/if's?
> for record in db:
> if record.name == 'pierre':
> Isn't that the one obvious way to do it?
> On Sun, Mar 2, 2008 at 12:24 AM, Adam Atlas <adam at atlas.st> wrote:
> > How about letting ordinary for loops contain multiple "for"s and
> > optionally "if"s like in list comprehensions and generator
> > expressions? For example, on a site I was just looking at, it had the
> > line:
> > for record in [ r for r in db if r.name == 'pierre' ]:
> > which could instead be:
> > for record in db if record.name == 'pierre':
> > And of course there could be much more complex ones too. I know you
> > could just do "for x in <some generator expression>" and get the same
> > effect and roughly the same speed, but I think this looks a lot nicer,
> > and it would make sense to have this sort of consistency across the
> > multiple contexts in which "for" can be used.
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