Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!nntp.club.cc.cmu.edu!micro-heart-of-gold.mit.edu!bloom-beacon.mit.edu!panix!not-for-mail
From: Grant Edwards <invalid@invalid.invalid>
Newsgroups: comp.lang.python
Subject: Re: Eval of expr with 'or' and 'and' within
Date: Fri, 14 Jun 2013 14:49:41 +0000 (UTC)
Organization: PANIX Public Access Internet and UNIX, NYC
Lines: 51
Message-ID: <kpfai4$o0e$4@reader1.panix.com>
References: <kpep0v$spl$8@news.ntua.gr>
NNTP-Posting-Host: dsl.comtrol.com
X-Trace: reader1.panix.com 1371221381 24590 64.122.56.22 (14 Jun 2013 14:49:41 GMT)
X-Complaints-To: abuse@panix.com
NNTP-Posting-Date: Fri, 14 Jun 2013 14:49:41 +0000 (UTC)
User-Agent: slrn/1.0.1 (Linux)
Xref: csiph.com comp.lang.python:48158

On 2013-06-14, Nick the Gr33k <support@superhost.gr> wrote:

> I started another thread

no kidding.

> because the last one was !@#$'ed up by irrelevant replies and was
> difficult to jeep track.
>
> >>> name="abcd"
> >>> month="efgh"
> >>> year="ijkl"
>
> >>> print(name or month or year)
> abcd
>
> Can understand that, it takes the first string out of the 3 strings
> that has a truthy value.

Yes, it does.  That's the way the language is defined to work.  If you
don't like it, pick a different language.

> >>> print("k" in (name and month and year))
> True
>
> No clue. since the expression in parenthesis returns 'abcd'

No it doesn't.  Try it:

Python 2.7.3 (default, Mar 20 2013, 14:16:24) 
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.

>>> name="abcd"
>>> month="efgh"
>>> year="ijkl"
>>> 
>>> "k" in (name and month and year)
True
>>> (name and month and year)
'ijkl'
>>> 

> how can 'k' contained within 'abcd' ?

It doesn't

-- 
Grant Edwards               grant.b.edwards        Yow! Am I having fun yet?
                                  at               
                              gmail.com