Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed4a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!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 0.012 X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'stops': 0.07; 'snippet': 0.09; 'martin': 0.11; 'python': 0.11; 'def': 0.12; '>the': 0.16; 'ah,': 0.16; 'generator.': 0.16; 'loops': 0.16; 'preserves': 0.16; 'skip:0 40': 0.16; 'wrote:on': 0.16; 'wrote:': 0.18; 'thanks.': 0.20; '>>>': 0.22; 'email addr:gmail.com>': 0.22; 'reset': 0.22; 'header:User-Agent:1': 0.23; 'mon,': 0.24; 'question': 0.24; 'header:In-Reply-To:1': 0.27; 'function': 0.29; 'chris': 0.29; 'am,': 0.29; "doesn't": 0.30; 'skip:g 30': 0.30; "skip:' 10": 0.31; '>>>>': 0.31; 'something': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'explains': 0.36; 'yield': 0.36; 'similar': 0.36; 'message-id:@gmail.com': 0.38; 'to:addr:python- list': 0.38; 'to:addr:python.org': 0.39; 'called': 0.40; 'temporarily': 0.60; 'jul': 0.74; '2014,': 0.84; 'otten': 0.84; 'url:apps': 0.91; 'state.': 0.95 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=user-agent:in-reply-to:references:mime-version:content-type :content-transfer-encoding:subject:from:date:to:message-id; bh=YS3hsRcMQBODGVdM11Wi37HvAVbQY8fTpiqFa4SIRIs=; b=dMomQcPWsjqdTtLgwSsBz7TasHTifCVP6IA2vpFE/x8rVmFaZQxfbt1+Lp6Gs5Lrk9 pBcTgI+C3RRqyPkL7gpDpoUUn8WiehqipVdGEKl+YqZDJm3suxByscCr6cBhBnQvomPE mP2WHupFUogt1EQ7koDmb0AtRsv3M1/39elFzKFZOfI9DeJEzyUTjKCZPXMGyMZhyR+7 Ddf5MiKyxHs5zhjnoz1FhEGVCruVc16qDzgY8lXWUp2mj+gGB46FmQAOsZ0AlnQViikP YCtSJ5pazNODE15GWhGqJFUS/v+0NKi8j/IGUE0aXquGo5nQlkosRJlQq1oeCczVZz9W zBbA== X-Received: by 10.152.245.34 with SMTP id xl2mr14632403lac.50.1406488657800; Sun, 27 Jul 2014 12:17:37 -0700 (PDT) User-Agent: K-@ Mail for Android X-Priority: 3 In-Reply-To: References: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----F65CBHGND5I0O1AUY83ZN2YBLZF1TF" Content-Transfer-Encoding: 8bit Subject: Re: complete brain fart, it doesn't loop From: Martin S Date: Sun, 27 Jul 2014 21:17:32 +0200 To: python-list@python.org X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 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: 69 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1406488664 news.xs4all.nl 2928 [2001:888:2000:d::a6]:60551 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:75287 ------F65CBHGND5I0O1AUY83ZN2YBLZF1TF Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Ah, thanks. Explains it all :) /martin On 27 Jul 2014, Peter Otten <__peter__@web.de> wrote: >Chris Angelico wrote: > >> On Mon, Jul 28, 2014 at 3:53 AM, Martin S >wrote: >>> I have this snippet in my web application. Question is why doesn't >the >>> stupid thing loop ten times? It loops exactly 1 time. >>> >>> # Reset counter >>> counter = 0 >>> >>> while counter <= 10: >>> >>> return "

Long line with games

" >>> >>> counter=counter+1 >> >> When you hit the 'return', it stops the function immediately :) > >By the way, Python has something similar to a function that temporarily > >interrupts execution but preserves state. It's called generator. >Compare: > >>>> def f(): >... for i in range(3): >... return "

Long line with games

" >... >>>> f() >'

Long line with games

' >>>> def g(): >... for i in range(3): >... yield "

Long line with games

" >... >>>> g() > >>>> list(g()) >['

Long line with games

', '

Long line with games

', '

Long >line >with games

'] -- Sent with K-@ Mail - the evolution of emailing. ------F65CBHGND5I0O1AUY83ZN2YBLZF1TF Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit Ah, thanks. Explains it all :)

/martin

On 27 Jul 2014, Peter Otten <__peter__@web.de> wrote:

Chris Angelico wrote:
On Mon, Jul 28, 2014 at 3:53 AM, Martin S <shieldfire@gmail.com> wrote:
I have this snippet in my web application. Question is why doesn't the
stupid thing loop ten times? It loops exactly 1 time.

# Reset counter
counter = 0

while counter <= 10:

return "Long line with games"

counter=counter+1

When you hit the 'return', it stops the function immediately :)

By the way, Python has something similar to a function that temporarily
interrupts execution but preserves state. It's called generator. Compare:

def f():
... for i in range(3):
... return "Long line with games"
...
f()
'Long line with games'
def g():
... for i in range(3):
... yield "Long line with games"
...
g()
<
generator object g at 0x7fe9b3e7b690>
list(g())
['Long line with games', 'Long line with games', 'Long line
with games']

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