Re: Help

Path	csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed3.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 0.001
X-Spam-Evidence	'H': 1.00; 'S': 0.00; 'definitions': 0.07; 'escape': 0.09; 'ex:': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'runs': 0.10; 'subject:Help': 0.11; 'python': 0.11; 'boolean': 0.16; 'dictionary,': 0.16; 'quit.': 0.16; 'received:80.91.229.3': 0.16; 'received:dip0.t-ipconnect.de': 0.16; 'received:plane.gmane.org': 0.16; 'received:t-ipconnect.de': 0.16; 'subroutine': 0.16; 'wrote:': 0.18; 'bit': 0.19; 'trying': 0.19; 'header:User- Agent:1': 0.23; 'adds': 0.24; 'options': 0.25; 'header:X -Complaints-To:1': 0.27; 'words': 0.29; "i'm": 0.30; 'work.': 0.31; 'asked': 0.31; 'context,': 0.31; 'once,': 0.31; 'run': 0.32; 'but': 0.35; 'add': 0.35; 'entry': 0.36; 'possible': 0.36; 'to:addr:python-list': 0.38; 'list,': 0.38; 'anything': 0.39; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'expression': 0.60; 'break': 0.61; 'new': 0.61; 'simple': 0.61; 'forward': 0.65; 'entry,': 0.84
X-Injected-Via-Gmane	http://gmane.org/
To	python-list@python.org
From	Peter Otten <__peter__@web.de>
Subject	Re: Help
Date	Fri, 26 Jul 2013 07:27:55 +0200
Organization	None
References	<067018ce-ca0c-415b-a5d3-3c2f79f11e8e@googlegroups.com>
Mime-Version	1.0
Content-Type	text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding	7Bit
X-Gmane-NNTP-Posting-Host	p5084a063.dip0.t-ipconnect.de
User-Agent	KNode/4.7.3
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	<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.5132.1374816489.3114.python-list@python.org> (permalink)
Lines	39
NNTP-Posting-Host	2001:888:2000:d::a6
X-Trace	1374816489 news.xs4all.nl 15980 [2001:888:2000:d::a6]:38691
X-Complaints-To	abuse@xs4all.nl
Xref	csiph.com comp.lang.python:51283

Show key headers only | View raw

tyler@familyrobbins.com wrote:

> I'm a bit new to python and I'm trying to create a simple program which
> adds words and definitions to a list, and then calls them forward when
> asked to.

> while escape < 1:
> 
>     choice = input("Type 'Entry' to add a word to the Dictionary, 'Search'
>     to find a word, and 'Exit' to quit. ")
> 
>     if choice == '`':
>         break
>     
>     if choice == 'Entry' or 'entry':

> However, if I run the program using anything but 'entry', the program
> still runs the 'entry' subroutine. After the 'entry' subroutine is run
> once, no options work. Ex:

The expression 

choice == 'Entry' or 'entry'

is evaluated by Python as

(choice == 'Entry') or 'entry'

All strings but "" are True in a boolean context, so this has the same 
effect as

(choice == 'Entry') or True

and is always True. Possible fixes:

if choice == "Entry" or choice == "entry":
if choice in ("Entry", "entry"):
if choice.casefold() == "entry".casefold(): # will accept ENTRY, eNtRy etc.

Thread

Help tyler@familyrobbins.com - 2013-07-25 22:06 -0700
  Re: Help alex23 <wuwei23@gmail.com> - 2013-07-26 15:21 +1000
  Re: Help Peter Otten <__peter__@web.de> - 2013-07-26 07:27 +0200
  Re: Help Chris Angelico <rosuav@gmail.com> - 2013-07-26 06:35 +0100
  Re: Help Terry Reedy <tjreedy@udel.edu> - 2013-07-26 01:46 -0400
  Re: Help tyler@familyrobbins.com - 2013-07-26 20:40 -0700

csiph-web