Re: a clarification on the "global" statement sought

Path	csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From	eryk sun <eryksun@gmail.com>
Newsgroups	comp.lang.python
Subject	Re: a clarification on the "global" statement sought
Date	Fri, 11 Mar 2016 03:20:32 -0600
Lines	18
Message-ID	<mailman.8.1457688076.26429.python-list@python.org> (permalink)
References	<nbtunf$u4r$1@dont-email.me>
Mime-Version	1.0
Content-Type	text/plain; charset=UTF-8
X-Trace	news.uni-berlin.de 1AuKZC7lmP2sTL+MqRmX2gjITtoIOTmAeZuTJ8A0JMSg==
Return-Path	<eryksun@gmail.com>
X-Original-To	python-list@python.org
Delivered-To	python-list@mail.python.org
X-Spam-Status	OK 0.005
X-Spam-Evidence	'H': 0.99; 'S': 0.00; 'received:209.85.223': 0.03; 'subject:skip:c 10': 0.07; 'globals': 0.09; '{},': 0.09; 'example:': 0.10; '"global"': 0.16; '2016': 0.16; 'module?': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'wrote:': 0.16; "wouldn't": 0.16; 'module,': 0.18; '>>>': 0.20; 'cc:2**0': 0.20; 'exec': 0.22; 'am,': 0.23; 'cc:addr:gmail.com': 0.24; 'header:In- Reply-To:1': 0.24; 'fri,': 0.27; 'separate': 0.27; 'message- id:@mail.gmail.com': 0.27; 'this.': 0.28; 'probably': 0.31; 'statement': 0.32; 'useful': 0.33; 'source': 0.33; 'received:google.com': 0.35; 'level': 0.35; 'received:209.85': 0.36; 'subject:" ': 0.36; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'received:209': 0.38; 'subject:the': 0.39; 'to:addr:python.org': 0.40; "you'll": 0.61; 'mar': 0.65; 'smith': 0.76; 'locals': 0.84; 'outermost': 0.84
DKIM-Signature	v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=+VPomapgtrbO3+sf5LIb2ZRTrUVTav09ZH8hW7F0DgM=; b=a9Brq/j24EgIEUh95k0UNFDUSnv6ZJWqVw/i6deQVk/Rgf1gA1roP98OCa3ZneCx08 NSMg7FgebVvZWr9FYHtDUT2er7g01BpvKRV/+x1n1BQr2yhW96C+98Kf4kPpeMQsZn/H sOgFgHsbizDDA87P4gyJWoLrQvwQNeeU0RmUEQ+cQunsasgR/JMeqEc+NbgehB9glfdp IQeD/E/ccd/iyUj+FV2kGhWf1et9Y2Lqzyp0qwZULKs82qfZRBaP/ixbB+Vyja1moIK+ MfLY5t9fqEdLFdysOiFhl2YPEjigtqaxf7p9OQ0wB72y3RlvYRCoG5vaGgx64LrR9LYi Gkjg==
X-Google-DKIM-Signature	v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=+VPomapgtrbO3+sf5LIb2ZRTrUVTav09ZH8hW7F0DgM=; b=BVFNyo/f1vDlgDZ93YSAKjhOkr/R/kcpxKt4ftOaEvFMCoxchpONk9U3gg0xkiULu7 +ofi6RBj3Wo7bbXFV9dYYq7yS50Ji5unAr3tlKmnDNQws3lYfdtpGBmY8WXM/QIJgluj PrxdV0ffoc6FXdIYQuHXHUPwrXHuFt4n7bvFKDg4GxWdE2C7UrtHKoqNxnXgGh4zRCZh bQNZ29XNXGnwtBWVxTPkZfIQraNy2tDiSAna21nC8BS6H7spQKIDMDZ3g4xlW3COTM/w 5VaQDsoglo3oanw/paY8ZHOdrb6bOGNFY5WJRS/tXgvYy9BbOD+7aW17XhwQGCoN7cgQ FkHg==
X-Gm-Message-State	AD7BkJLRZk8gFj+JOxmbnOyLAaNwQnp0ZVj0e/A3MVC6f0MUrTVdA4DfHjO5vLxlNmQIIjbemSbsnwUCNU60JA==
X-Received	by 10.107.135.202 with SMTP id r71mr9954061ioi.103.1457688072353; Fri, 11 Mar 2016 01:21:12 -0800 (PST)
In-Reply-To	<nbtunf$u4r$1@dont-email.me>
X-BeenThere	python-list@python.org
X-Mailman-Version	2.1.21
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>
Xref	csiph.com comp.lang.python:104599

Show key headers only | View raw

On Fri, Mar 11, 2016 at 2:13 AM, Charles T. Smith
<cts.private.yahoo@gmail.com> wrote:
> When might a "global" statement be used in the outermost level of a module?

You wouldn't need this in a normal module, because locals and globals
are the same. It may be useful if you're using exec with separate
locals and globals, and need to set a global. For example:

    source = 'global y; x, y = 1, 2'
    gvars, lvars = {}, {}
    exec(source, gvars, lvars)

    >>> lvars
    {'x': 1}
    >>> gvars['y']
    2

Probably you'll never need this.

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

Thread

a clarification on the "global" statement sought "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2016-03-11 08:13 +0000
  Re: a clarification on the "global" statement sought Chris Angelico <rosuav@gmail.com> - 2016-03-11 19:29 +1100
    Re: a clarification on the "global" statement sought "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2016-03-11 08:53 +0000
      Re: a clarification on the "global" statement sought Peter Otten <__peter__@web.de> - 2016-03-11 10:23 +0100
  Re: a clarification on the "global" statement sought Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-03-11 08:31 +0000
    Re: a clarification on the "global" statement sought "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2016-03-11 09:09 +0000
      Re: a clarification on the "global" statement sought Chris Angelico <rosuav@gmail.com> - 2016-03-11 20:29 +1100
  Re: a clarification on the "global" statement sought eryk sun <eryksun@gmail.com> - 2016-03-11 03:20 -0600

csiph-web