Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!selfless.tophat.at!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!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 0.002 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'formatting': 0.07; 'python': 0.08; '>>>>': 0.09; 'dict': 0.09; 'host,': 0.09; 'port,': 0.09; 'skip:" 60': 0.09; 'pm,': 0.10; 'syntax': 0.11; 'wrote:': 0.14; 'roy': 0.16; 'specifier': 0.16; 'subject:syntax': 0.16; 'vito': 0.16; 'skip:" 40': 0.16; 'somewhere': 0.17; '2.3': 0.19; 'header:In-Reply-To:1': 0.21; 'seems': 0.21; 'item.': 0.23; "what's": 0.23; 'certainly': 0.25; 'string': 0.26; 'example': 0.27; 'message-id:@mail.gmail.com': 0.28; 'opposed': 0.29; 'instead': 0.29; 'sun,': 0.30; 'print': 0.31; 'to:addr:python- list': 0.33; 'php': 0.34; 'example,': 0.35; 'skip:" 10': 0.35; 'subject: ?': 0.35; 'subject:What': 0.35; 'using': 0.35; 'received:google.com': 0.37; 'something': 0.37; 'url:docs': 0.37; 'url:python': 0.38; 'received:74.125': 0.38; 'url:org': 0.38; 'data': 0.38; 'subject:: ': 0.38; 'easier': 0.39; 'to:addr:python.org': 0.39; 'format': 0.40; 'more': 0.60; 'url:3': 0.67; 'subject:this': 0.76; 'url:lib': 0.84 MIME-Version: 1.0 In-Reply-To: References: <4dfdfc99$0$715$426a34cc@news.free.fr> <4dfe10d1$0$28053$426a34cc@news.free.fr> Date: Sun, 19 Jun 2011 15:29:41 -0700 Subject: Re: What is this syntax ? From: Benjamin Kaplan To: python-list@python.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Junkmail-Status: score=10/49, host=mpv2.tis.cwru.edu X-Junkmail-Signature-Raw: score=unknown, refid=str=0001.0A020204.4DFE7857.0023,ss=1,fgs=0, ip=74.125.83.182, so=2010-12-23 16:51:53, dmn=2009-09-10 00:05:08, mode=single engine X-Junkmail-IWF: false X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 43 NNTP-Posting-Host: 82.94.164.166 X-Trace: 1308522593 news.xs4all.nl 49178 [::ffff:82.94.164.166]:57667 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:7992 On Sun, Jun 19, 2011 at 2:06 PM, Vito 'ZeD' De Tullio wrote: > Roy Smith wrote: > >> There's something nice about building up strings in-line, as >> opposed to having to look somewhere to see what's being interpolated. >> To give a more complex example, consider: >> >> print "$scheme://$host:$port/$route#$fragment" >> >> That certainly seems easier to me to read than: >> >> print "%s://%s:%s/%s#%s" % (scheme, >> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 port, >> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 host, >> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 route, >> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 fragment) >> >> because I don't have to line up the nth format specifier with the nth >> data item. > > well, in python3 you can use dict to format strings > >>>> print("%(a)s" % {'a':'b'}) > b > > and you can achieve php interpolation via locals() > >>>> a =3D 'b' >>>> print("%(a)s" % locals()) > b > > > -- > By ZeD That's a lot older than Python 3. Here's the example from the 2.3 docs: http://docs.python.org/release/2.3/lib/typesseq-strings.html Python 3 added a different syntax for string formatting, using .NET's formatting syntax instead of C's. "{scheme}://{host}:{port}/{route}#{fragment}".format(locals())