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Re: Newbie Question: Obtain element from list of tuples

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Date Sun, 18 Dec 2011 19:49:34 +0000
Subject Re: Newbie Question: Obtain element from list of tuples
From Arnaud Delobelle <arnodel@gmail.com>
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On 18 December 2011 19:41, HoneyMonster <someone@someplace.invalid> wrote:
> Hi,
>
> I'm just starting to learn Python, so please bear with me. I have in my
> program an object (recs) which is a list of tuples (returned as such by a
> database query).
>
> My question is doubtless a very easy one to answer: Say I want the ninth
> element in the twentieth tuple put into variable PID, I can do this,
> bearing in mind that numbering starts at zero:
>
> tup = recs[19]
> PID = tup[8]
>
> But there must be an easier way; i.e. to do it in one go without the
> extra variable. How do I achieve that please?

Well, you were almost there:

pid = recs[19][8]

Note: all caps is usually reserved for constants in Python.

-- 
Arnaud

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Thread

Newbie Question: Obtain element from list of tuples HoneyMonster <someone@someplace.invalid> - 2011-12-18 19:41 +0000
  Re: Newbie Question: Obtain element from list of tuples Arnaud Delobelle <arnodel@gmail.com> - 2011-12-18 19:49 +0000
  Re: Newbie Question: Obtain element from list of tuples Roy Smith <roy@panix.com> - 2011-12-18 15:04 -0500
    Re: Newbie Question: Obtain element from list of tuples HoneyMonster <someone@someplace.invalid> - 2011-12-18 20:22 +0000
      Re: Newbie Question: Obtain element from list of tuples Roy Smith <roy@panix.com> - 2011-12-18 15:25 -0500
    Re: Newbie Question: Obtain element from list of tuples alex23 <wuwei23@gmail.com> - 2011-12-18 18:35 -0800
      Re: Newbie Question: Obtain element from list of tuples Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-12-19 03:00 +0000
        Re: Newbie Question: Obtain element from list of tuples "Frank Millman" <frank@chagford.com> - 2011-12-19 08:46 +0200
          Re: Newbie Question: Obtain element from list of tuples DevPlayer <devplayer@gmail.com> - 2011-12-19 07:37 -0800
          Re: Newbie Question: Obtain element from list of tuples alex23 <wuwei23@gmail.com> - 2011-12-19 19:53 -0800
  Re: Newbie Question: Obtain element from list of tuples Chris Angelico <rosuav@gmail.com> - 2011-12-19 07:51 +1100
    Re: Newbie Question: Obtain element from list of tuples Roy Smith <roy@panix.com> - 2011-12-18 16:10 -0500
    Re: Newbie Question: Obtain element from list of tuples HoneyMonster <someone@someplace.invalid> - 2011-12-18 22:55 +0000
      Re: Newbie Question: Obtain element from list of tuples Chris Angelico <rosuav@gmail.com> - 2011-12-19 10:40 +1100
        Re: Newbie Question: Obtain element from list of tuples HoneyMonster <someone@someplace.invalid> - 2011-12-20 00:59 +0000

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