Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.python > #57194

IDLE being too clever checking nonlocal declarations?

Path csiph.com!usenet.pasdenom.info!gegeweb.org!usenet-fr.net!nerim.net!novso.com!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path <rosuav@gmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.001
X-Spam-Evidence '*H*': 1.00; '*S*': 0.00; 'python,': 0.02; 'subject:IDLE': 0.04; 'editor.': 0.09; 'def': 0.12; 'windows': 0.15; "'q'": 0.16; 'a()': 0.16; 'a():': 0.16; 'b()': 0.16; 'b():': 0.16; 'command-line': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'subject:too': 0.16; 'syntaxerror:': 0.16; 'throw': 0.16; 'trying': 0.19; 'typing': 0.19; '>>>': 0.22; 'fine': 0.24; "doesn't": 0.30; 'mode': 0.30; 'message-id:@mail.gmail.com': 0.30; 'something': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'idle': 0.36; 'doing': 0.36; 'subject:?': 0.36; 'too': 0.37; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; 'name': 0.63; 'subject:being': 0.84
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=8NOURDfwbComvRiZ6RkZAxJdRE9UwCIaE6VoThThCxQ=; b=mYgM9hf1Yn4pvKvZEdASSt1NbKBTujWsHN+0PWq9ZSzSXNDLvvSEmmK3rGVFv5i307 g4Rr+8VGkz+DjmKANKMzMfzbUHsArRsq0mKht0z82RSIh74BLlE+f3lBvSf1kP/2wZme 3jn9UnqpEgLxiAEiS5dKXtco6UTx2q4zqhOyazZEwpj/nuM2f38pyZa30mCUUyJtzQ6u 6CM7rTmYc7ReXgIy/MEGknHDXLW9qCe+zKVA5F6+elYnxhTqhuzDXZho9MwUy2MYWfHj kt1N9cbNA0G0FwscN8UhhVePiZ9WcPF6rQAc9FJyOaOJ+0+u4iDQv+MgoRuafiRiRVhB 0bpA==
MIME-Version 1.0
X-Received by 10.68.96.130 with SMTP id ds2mr17841187pbb.99.1382367961005; Mon, 21 Oct 2013 08:06:01 -0700 (PDT)
Date Tue, 22 Oct 2013 02:06:00 +1100
Subject IDLE being too clever checking nonlocal declarations?
From Chris Angelico <rosuav@gmail.com>
To python-list@python.org
Content-Type text/plain; charset=ISO-8859-1
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.15
Precedence list
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <https://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 <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.1311.1382367965.18130.python-list@python.org> (permalink)
Lines 29
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1382367965 news.xs4all.nl 15925 [2001:888:2000:d::a6]:42845
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:57194

Show key headers only | View raw


Try typing this into IDLE:

>>> def a():
    def b():
        nonlocal q
SyntaxError: no binding for nonlocal 'q' found


In interactive command-line Python, this doesn't throw an error, and
it works fine if the name is used later:

>>> def a():
    def b():
        nonlocal q
        q+=1
    q=1
    b()
    return q

>>> a()
2

But typing this into IDLE interactive mode requires some fiddling
around with the editor. Is it trying to be too clever? Am I doing
something that makes no sense?

Tested with 3.3.0 on Windows XP.

ChrisA

Back to comp.lang.python | Previous | Next | Find similar | Unroll thread


Thread

IDLE being too clever checking nonlocal declarations? Chris Angelico <rosuav@gmail.com> - 2013-10-22 02:06 +1100

csiph-web