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Groups > comp.lang.python > #86240

Re: Concatenate list values

From Mark Lawrence <breamoreboy@yahoo.co.uk>
Subject Re: Concatenate list values
Date 2015-02-23 17:13 +0000
References <12821378-62af-4954-8b61-aa0738c5ff5c@googlegroups.com> <20150223101434.52871fcc@bigbox.christie.dr>
Newsgroups comp.lang.python
Message-ID <mailman.19084.1424711656.18130.python-list@python.org> (permalink)

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On 23/02/2015 16:14, Tim Chase wrote:
> On 2015-02-23 07:58, loial wrote:
>> Is there a quick way to concatenate all the values in a list into a
>> string, except the first value?
>>
>> I want this to work with variable length lists.
>>
>> All values in list will be strings.
>
> Using
>
>    "".join(my_list[1:])
>
> should work.
>
> If it is an arbitrary iterable instead of a list (and thus can't be
> sliced), you can use
>
>    "".join(itertools.islice(my_iter, 1, None))
>
> -tkc
>

Presumably rather more efficient for long lists as you're not taking a 
copy of (effectively) the entire list.  Any volunteers to measure it, 
not mentioning any names, Mr D'Aprano? :)

-- 
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.

Mark Lawrence

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Thread

Concatenate list values loial <jldunn2000@gmail.com> - 2015-02-23 07:58 -0800
  Re: Concatenate list values John Gordon <gordon@panix.com> - 2015-02-23 16:07 +0000
  Re: Concatenate list values alister <alister.nospam.ware@ntlworld.com> - 2015-02-23 16:08 +0000
  Re: Concatenate list values Peter Otten <__peter__@web.de> - 2015-02-23 17:09 +0100
  Re: Concatenate list values Tim Chase <python.list@tim.thechases.com> - 2015-02-23 10:14 -0600
  Re: Concatenate list values Andrew Berg <aberg010@my.hennepintech.edu> - 2015-02-23 10:14 -0600
  Re: Concatenate list values Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-02-23 17:13 +0000
    Re: Concatenate list values wxjmfauth@gmail.com - 2015-02-24 02:30 -0800
  Re: Concatenate list values loial <jldunn2000@gmail.com> - 2015-02-24 00:37 -0800

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