Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder2.enfer-du-nord.net!feeder.news-service.com!news2.euro.net!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.013 X-Spam-Evidence: '*H*': 0.97; '*S*': 0.00; 'python': 0.08; 'pm,': 0.10; 'syntax': 0.11; 'def': 0.12; 'wrote:': 0.14; 'library': 0.15; '**kwargs):': 0.16; 'generators.': 0.16; 'cc:addr:python- list': 0.17; 'simpler': 0.19; 'yet.': 0.19; 'header:In-Reply- To:1': 0.21; 'cc:2**0': 0.22; 'cc:no real name:2**0': 0.23; 'gregory': 0.23; '(and': 0.25; 'message-id:@mail.gmail.com': 0.28; 'sat,': 0.29; 'import': 0.29; 'lists': 0.29; 'instead': 0.29; 'cc:addr:python.org': 0.30; 'can.': 0.30; 'ewing': 0.30; "can't": 0.32; 'patch': 0.32; 'proposed': 0.32; 'steven': 0.32; 'list': 0.33; "d'aprano": 0.35; 'replacement': 0.35; 'idea': 0.36; 'received:google.com': 0.37; 'received:74.125.82': 0.38; 'received:74.125': 0.38; 'but': 0.38; 'subject:: ': 0.38; 'easier': 0.39; "i'd": 0.39; 'more': 0.60; 'your': 0.60; 'piece': 0.63; 'promise': 0.72 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=JTvEQgNnYYyqQSHByJ0Gmwa14+PP2tnzFv07FvxqYBw=; b=gbmwX+nMsmOqmfk/WW4/avQjkIi/cTIhnW3ew/6k/D8GLMW+dvsHA6mcmMC9GJZ1ml WJfGkNIx6dqKmqH7LKl9AZ8rSHylGzmx01bSMW04oT+BgOVdkTdbxXRHG9d0EQeD7HCn rchn5tlQIqaFQHIJwUrXEBRhqMNjOSXCh0MU0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=eHy6xusBDpvCnD+CE9YyhLVP5rt7tlZpu/xA0fY0lmsYhUZOw1tjKrL2yJNiPne+06 JFTVZw8UblQ+qvVEyyf9Rlbvg2joUl3WbdmIK7P77cluQwpTvwfYrNrJggt8IdggPHeu D8Td/+LfUEaW+qCkfmNQ/B6VDoFJ4WQ+sViBs= MIME-Version: 1.0 In-Reply-To: <95059eFuroU1@mid.individual.net> References: <4dea7932$0$28716$607ed4bc@cv.net> <4dead453$0$29996$c3e8da3$5496439d@news.astraweb.com> <95059eFuroU1@mid.individual.net> Date: Sat, 4 Jun 2011 22:06:30 -0400 Subject: Re: Generator Frustration From: Jack Diederich To: Gregory Ewing Content-Type: text/plain; charset=ISO-8859-1 Cc: python-list@python.org X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 23 NNTP-Posting-Host: 82.94.164.166 X-Trace: 1307239600 news.xs4all.nl 49176 [::ffff:82.94.164.166]:34274 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:7031 On Sat, Jun 4, 2011 at 9:43 PM, Gregory Ewing wrote: > Steven D'Aprano wrote: > >> A nice piece of syntax that has been proposed for Python is "yield from", >> which will do the same thing, but you can't use that yet. You can also patch the library to always return lists instead of generators. def seriously_I_just_want_lists(func): def replacement(*args, **kwargs): return list(func(*args, **kwargs)) return replacement import otherlib otherlib.somefunc = seriously_I_just_want_lists(otherlib.somefunc) But I'd avoid it where you can. While the idea of a list is simpler than the idea of an iterable (and easier to get your head around) iterables promise less and that makes them more flexible and easier to composite. -Jack