Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.python > #12550
| Path | csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!feeder.news-service.com!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail |
|---|---|
| Return-Path | <python-python-list@m.gmane.org> |
| X-Original-To | python-list@python.org |
| Delivered-To | python-list@mail.python.org |
| X-Spam-Status | OK 0.004 |
| X-Spam-Evidence | '*H*': 0.99; '*S*': 0.00; 'subject:while': 0.07; '301': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:80.91.229.12': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'received:lo.gmane.org': 0.09; 'received:dip.t-dialin.net': 0.16; 'received:t-dialin.net': 0.16; 'wrote:': 0.16; '>>>': 0.18; 'bytes': 0.18; 'stops': 0.23; "i'm": 0.27; 'problem': 0.28; 'lines': 0.30; 'from:addr:web.de': 0.30; 'to:addr:python-list': 0.33; 'header:X-Complaints-To:1': 0.35; 'uses': 0.35; 'received:org': 0.38; 'subject:: ': 0.39; 'header :Mime-Version:1': 0.39; 'to:addr:python.org': 0.39; 'otten': 0.84; 'reveals': 0.84; 'confusion.': 0.91 |
| X-Injected-Via-Gmane | http://gmane.org/ |
| To | python-list@python.org |
| From | Peter Otten <__peter__@web.de> |
| Subject | Re: idiomatic analogue of Perl's: while (<>) { ... } |
| Date | Thu, 01 Sep 2011 09:43:04 +0200 |
| Organization | None |
| References | <20110901045650.GA3466@magic.hamla.org> <j3n8r3$heg$1@dough.gmane.org> |
| Mime-Version | 1.0 |
| Content-Type | text/plain; charset="ISO-8859-1" |
| Content-Transfer-Encoding | 7Bit |
| X-Gmane-NNTP-Posting-Host | p5084a90a.dip.t-dialin.net |
| X-BeenThere | python-list@python.org |
| X-Mailman-Version | 2.1.12 |
| Precedence | list |
| List-Id | General discussion list for the Python programming language <python-list.python.org> |
| List-Unsubscribe | <http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe> |
| List-Archive | <http://mail.python.org/pipermail/python-list> |
| List-Post | <mailto:python-list@python.org> |
| List-Help | <mailto:python-list-request@python.org?subject=help> |
| List-Subscribe | <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.647.1314862977.27778.python-list@python.org> (permalink) |
| Lines | 21 |
| NNTP-Posting-Host | 2001:888:2000:d::a6 |
| X-Trace | 1314862977 news.xs4all.nl 2483 [2001:888:2000:d::a6]:46774 |
| X-Complaints-To | abuse@xs4all.nl |
| Xref | x330-a1.tempe.blueboxinc.net comp.lang.python:12550 |
Show key headers only | View raw
Peter Otten wrote:
> A quick look into fileinput.py reveals that it uses readlines() and slurps
> in the complete "file". I'm not sure that was a clever design decision...
Correction:
>>> with open("tmp.txt") as f: lines = f.readlines(0)
...
>>> len(lines)
1000000
>>> with open("tmp.txt") as f: lines = f.readlines(1)
...
>>> len(lines)
301
>>> len("".join(lines))
8208
So on my system file.readlines(size) stops after about 2**13 bytes which is
not a problem memorywise. Sorry for the confusion.
Back to comp.lang.python | Previous | Next | Find similar | Unroll thread
Re: idiomatic analogue of Perl's: while (<>) { ... } Peter Otten <__peter__@web.de> - 2011-09-01 09:43 +0200
csiph-web