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Re: Converting a list of strings into a list of integers?

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On 22.07.2012 20:03, David Robinow wrote:
> On Sun, Jul 22, 2012 at 12:20 PM, Jan Riechers <janpeterr@freenet.de> wrote:
>> On 22.07.2012 18:39, Alister wrote:
>>> looks like a classic list comprehension to me and can be achieved in a
>>> single line
>>> MODUS_LIST=[int(x) for x in options.modus_list]
>> Hi,
>>
>> I am not sure why everyone is using the for-iterator option over a "map",
>> but I would do it like that:
>> MODUS_LIST= map(int, options.modus_list)
>>
>> "map" works on a list and does commandX (here "int" conversion, use "str"
>> for string.. et cetera) on sequenceY, returning a sequence. More in the help
>> file.
>>
>> And if I'm not completely mistaken, it's also the quicker way to do
>> performance wise. But I can't completely recall the exact reason.
>   Because if you don't have a functional background 'map' is
> unfamiliar. Although I've been aware of it for years I still can't
> remember if it's map(int, list) or map(list,int) and although with a
> small effort I could force it into my brain, I know that many of the
> people reading my code are as ignorant as I am. The list comprehension
> seems clearer to me.
>
>

Hello,

no offense by that, I just was wondering why everyone uses the list 
comprehension instead the built-in map in this case - I'm still using 
Python 2.7.3 so perhaps things might have changed a little. :)

So far
Jan

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Thread

Converting a list of strings into a list of integers? Tony the Tiger <tony@tiger.invalid> - 2012-07-22 10:29 -0500
  Re: Converting a list of strings into a list of integers? Roy Smith <roy@panix.com> - 2012-07-22 11:39 -0400
    Re: Converting a list of strings into a list of integers? Tony the Tiger <tony@tiger.invalid> - 2012-07-22 11:01 -0500
      Re: Converting a list of strings into a list of integers? Peter Otten <__peter__@web.de> - 2012-07-22 18:30 +0200
  Re: Converting a list of strings into a list of integers? Alister <alister.ware@ntlworld.com> - 2012-07-22 15:39 +0000
    Re: Converting a list of strings into a list of integers? Tony the Tiger <tony@tiger.invalid> - 2012-07-22 11:01 -0500
    Re: Converting a list of strings into a list of integers? Jan Riechers <janpeterr@freenet.de> - 2012-07-22 19:20 +0300
      Re: Converting a list of strings into a list of integers? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-07-22 17:01 +0000
        Re: Converting a list of strings into a list of integers? Jan Riechers <janpeterr@freenet.de> - 2012-07-22 20:27 +0300
      Re: Converting a list of strings into a list of integers? Grant Edwards <invalid@invalid.invalid> - 2012-07-23 14:27 +0000
        Re: Converting a list of strings into a list of integers? rusi <rustompmody@gmail.com> - 2012-07-23 08:31 -0700
    Re: Converting a list of strings into a list of integers? David Robinow <drobinow@gmail.com> - 2012-07-22 13:03 -0400
    Re: Converting a list of strings into a list of integers? Jan Riechers <janpeterr@freenet.de> - 2012-07-22 20:10 +0300
    Re: Converting a list of strings into a list of integers? Ian Kelly <ian.g.kelly@gmail.com> - 2012-07-22 11:16 -0600
  Re: Converting a list of strings into a list of integers? Paul Rubin <no.email@nospam.invalid> - 2012-07-22 10:03 -0700
  Re: Converting a list of strings into a list of integers? Dave Angel <d@davea.name> - 2012-07-22 21:03 -0400

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