Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!aioe.org!feeder.news-service.com!newsfeed.xs4all.nl!newsfeed5.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 0.000
X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'sys': 0.05; 'terry': 0.07; 'python': 0.08; '__name__': 0.09; 'cool.': 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; 'subject:parameters': 0.09; '>>>': 0.12; 'def': 0.12; 'am,': 0.14; 'wrote:': 0.14; '"__main__":': 0.16; '%r"': 0.16; 'hint': 0.16; 'rationale': 0.16; 'received:dip.t-dialin.net': 0.16; 'received:t-dialin.net': 0.16; 'reedy': 0.16; 'stringio': 0.16; 'subject:function': 0.16; '\xc3\xa9crit': 0.16; 'import': 0.29; 'fact': 0.30; 'from:addr:web.de': 0.30; 'value)': 0.30; 'print': 0.31; 'header:X -Complaints-To:1': 0.32; 'does': 0.33; 'to:addr:python-list': 0.33; 'skip:" 20': 0.33; 'file': 0.34; 'thinking': 0.34; '"",': 0.35; 'received:org': 0.38; 'but': 0.38; 'subject:: ': 0.38; 'header:Mime-Version:1': 0.39; 'add': 0.39; 'to:addr:python.org': 0.39
X-Injected-Via-Gmane: http://gmane.org/
To: python-list@python.org
From: Peter Otten <__peter__@web.de>
Subject: Re: scope of function parameters
Date: Mon, 30 May 2011 11:41:17 +0200
Organization: None
References: <mailman.2216.1306661462.9059.python-list@python.org> <94fdk7FihlU1@mid.individual.net> <87tycd89qc.fsf@benfinney.id.au> <irvg1f$qb$1@news.univ-fcomte.fr> <BANLkTinntDVRZ_WopK9+ddf_eqtAVTBFMQ@mail.gmail.com> <4DE3495D.9080309@gmail.com> <mailman.2255.1306746172.9059.python-list@python.org> <4DE35E87.8060208@gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8Bit
X-Gmane-NNTP-Posting-Host: p5084a968.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.2257.1306748481.9059.python-list@python.org>
Lines: 50
NNTP-Posting-Host: 82.94.164.166
X-Trace: 1306748481 news.xs4all.nl 49183 [::ffff:82.94.164.166]:52202
X-Complaints-To: abuse@xs4all.nl
Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:6646

Laurent Claessens wrote:

> Le 30/05/2011 11:02, Terry Reedy a écrit :
>> On 5/30/2011 3:38 AM, Laurent wrote:
>>
>>>  Cool. I was thinking that "5" was the name, but
>>>   >>>  5.__add__(6)
>>>  File "<stdin>", line 1
>>>  5.__add__(6)
>>
>>
>> Try 5 .__add__(6)
> 
> What is the rationale behind the fact to add a space between "5" and
> ".__add__" ?
> Why does it work ?

It's a hint for the tokenizer.

$ cat show_tokens.py
import sys

from tokenize import generate_tokens
from cStringIO import StringIO
from token import tok_name

_name_width = max(len(name) for name in tok_name.itervalues())

def show_tokens(s):
    for token in generate_tokens(StringIO(s).readline):
        name = tok_name[token[0]]
        value = token[1]
        print "%-*s %r" % (_name_width, name, value)

if __name__ == "__main__":
    show_tokens(" ".join(sys.argv[1:]))

$ python show_tokens.py 5.__add__
NUMBER           '5.'
NAME             '__add__'
ENDMARKER        ''

$ python show_tokens.py 5 .__add__
NUMBER           '5'
OP               '.'
NAME             '__add__'
ENDMARKER        ''