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Re: Whittle it on down

From Stephen Hansen <me+python@ixokai.io>
Newsgroups comp.lang.python
Subject Re: Whittle it on down
Date 2016-05-04 22:39 -0700
Message-ID <mailman.397.1462426759.32212.python-list@python.org> (permalink)
References <ngejmj$gc4$1@dont-email.me> <1462426755.15465.598690257.42990546@webmail.messagingengine.com>

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On Wed, May 4, 2016, at 09:58 PM, DFS wrote:
> Want to whittle a list like this:
> 
> [u'Espa\xf1ol', 'Health & Fitness Clubs (36)', 'Health Clubs & 
> Gymnasiums (42)', 'Health Fitness Clubs', 'Name', 'Atlanta city guide', 
> 'edit address', 'Tweet', 'PHYSICAL FITNESS CONSULTANTS & TRAINERS', 
> 'HEALTH CLUBS & GYMNASIUMS', 'HEALTH CLUBS & GYMNASIUMS', 
> 'www.custombuiltpt.com/', 'RACQUETBALL COURTS PRIVATE', 
> 'www.lafitness.com', 'GYMNASIUMS', 'HEALTH & FITNESS CLUBS', 
> 'www.lafitness.com', 'HEALTH & FITNESS CLUBS', 'www.lafitness.com', 
> 'PERSONAL FITNESS TRAINERS', 'HEALTH CLUBS & GYMNASIUMS', 'EXERCISE & 
> PHYSICAL FITNESS PROGRAMS', 'FITNESS CENTERS', 'HEALTH CLUBS & 
> GYMNASIUMS', 'HEALTH CLUBS & GYMNASIUMS', 'PERSONAL FITNESS TRAINERS', 
> '5', '4', '3', '2', '1', 'Yellow Pages', 'About Us', 'Contact Us', 
> 'Support', 'Terms of Use', 'Privacy Policy', 'Advertise With Us', 
> 'Add/Update Listing', 'Business Profile Login', 'F.A.Q.']
> 
> down to
> 
> ['PHYSICAL FITNESS CONSULTANTS & TRAINERS', 'HEALTH CLUBS & GYMNASIUMS', 
> 'HEALTH CLUBS & GYMNASIUMS', 'RACQUETBALL COURTS PRIVATE', 'GYMNASIUMS', 
> 'HEALTH & FITNESS CLUBS', 'HEALTH & FITNESS CLUBS',  'PERSONAL FITNESS 
> TRAINERS', 'HEALTH CLUBS & GYMNASIUMS', 'EXERCISE & PHYSICAL FITNESS 
> PROGRAMS', 'FITNESS CENTERS', 'HEALTH CLUBS & GYMNASIUMS', 'HEALTH CLUBS 
> & GYMNASIUMS', 'PERSONAL FITNESS TRAINERS']

Sometimes regular expressions are the tool to do the job:

Given:

>>> input = [u'Espa\xf1ol', 'Health & Fitness Clubs (36)', 'Health Clubs & Gymnasiums (42)', 'Health Fitness Clubs', 'Name', 'Atlanta city guide', 'edit address', 'Tweet', 'PHYSICAL FITNESS CONSULTANTS & TRAINERS', 'HEALTH CLUBS & GYMNASIUMS', 'HEALTH CLUBS & GYMNASIUMS', 'www.custombuiltpt.com/', 'RACQUETBALL COURTS PRIVATE', 'www.lafitness.com', 'GYMNASIUMS', 'HEALTH & FITNESS CLUBS', 'www.lafitness.com', 'HEALTH & FITNESS CLUBS', 'www.lafitness.com', 'PERSONAL FITNESS TRAINERS', 'HEALTH CLUBS & GYMNASIUMS', 'EXERCISE & PHYSICAL FITNESS PROGRAMS', 'FITNESS CENTERS', 'HEALTH CLUBS & GYMNASIUMS', 'HEALTH CLUBS & GYMNASIUMS', 'PERSONAL FITNESS TRAINERS', '5', '4', '3', '2', '1', 'Yellow Pages', 'About Us', 'Contact Us', 'Support', 'Terms of Use', 'Privacy Policy', 'Advertise With Us', 'Add/Update Listing', 'Business Profile Login', 'F.A.Q.']

Then:

>>> pattern = re.compile(r"^[A-Z\s&]+$")
>>> output = [x for x in list if pattern.match(x)]
>>> output
['PHYSICAL FITNESS CONSULTANTS & TRAINERS', 'HEALTH CLUBS & GYMNASIUMS',
'HEALTH CLUBS & GYMNASIUMS', 'RACQUETBALL COURTS PRIVATE', 'GYMNASIUMS',
'HEALTH & FITNESS CLUBS', 'HEALTH & FITNESS CLUBS', 'PERSONAL FITNESS
TRAINERS', 'HEALTH CLUBS & GYMNASIUMS', 'EXERCISE & PHYSICAL FITNESS
PROGRAMS', 'FITNESS CENTERS', 'HEALTH CLUBS & GYMNASIUMS', 'HEALTH CLUBS
& GYMNASIUMS', 'PERSONAL FITNESS TRAINERS']

-- 
Stephen Hansen
  m e @ i x o k a i . i o

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Thread

Whittle it on down DFS <nospam@dfs.com> - 2016-05-05 00:58 -0400
  Re: Whittle it on down Stephen Hansen <me+python@ixokai.io> - 2016-05-04 22:39 -0700
    Re: Whittle it on down DFS <nospam@dfs.com> - 2016-05-05 08:44 -0400
    Re: Whittle it on down DFS <nospam@dfs.com> - 2016-05-05 19:31 -0400
      Re: Whittle it on down Peter Otten <__peter__@web.de> - 2016-05-06 09:45 +0200
        Re: Whittle it on down DFS <nospam@dfs.com> - 2016-05-06 09:58 -0400
          Re: Whittle it on down DFS <nospam@dfs.com> - 2016-05-06 10:41 -0400
            Re: Whittle it on down Peter Otten <__peter__@web.de> - 2016-05-06 17:44 +0200
              Re: Whittle it on down DFS <nospam@dfs.com> - 2016-05-06 18:43 -0400
      Re: Whittle it on down alister <alister.ware@ntlworld.com> - 2016-05-06 10:01 +0000
  Re: Whittle it on down Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-05-05 08:53 +0300
    Re: Whittle it on down DFS <nospam@dfs.com> - 2016-05-05 08:57 -0400
  Re: Whittle it on down Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-05-05 16:04 +1000
    Re: Whittle it on down Stephen Hansen <me+python@ixokai.io> - 2016-05-04 23:46 -0700
      Re: Whittle it on down Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-05-05 17:04 +1000
        Re: Whittle it on down Stephen Hansen <me+python@ixokai.io> - 2016-05-05 00:34 -0700
          Re: Whittle it on down Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-05-05 18:41 +1000
            Re: Whittle it on down Random832 <random832@fastmail.com> - 2016-05-05 09:13 -0400
              Re: Whittle it on down Steven D'Aprano <steve@pearwood.info> - 2016-05-06 03:13 +1000
      Re: Whittle it on down Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-05-05 17:36 +1000
        Re: Whittle it on down Peter Otten <__peter__@web.de> - 2016-05-05 10:17 +0200
          Re: Whittle it on down Steven D'Aprano <steve@pearwood.info> - 2016-05-06 01:39 +1000
        Re: Whittle it on down Random832 <random832@fastmail.com> - 2016-05-05 09:21 -0400
          Re: Whittle it on down Steven D'Aprano <steve@pearwood.info> - 2016-05-06 04:03 +1000
            Re: Whittle it on down Random832 <random832@fastmail.com> - 2016-05-05 14:52 -0400
            Re: Whittle it on down Stephen Hansen <me+python@ixokai.io> - 2016-05-05 12:09 -0700
        Re: Whittle it on down Stephen Hansen <me+python@ixokai.io> - 2016-05-05 06:32 -0700
          Re: Whittle it on down DFS <nospam@dfs.com> - 2016-05-05 10:36 -0400
          Re: Whittle it on down Steven D'Aprano <steve@pearwood.info> - 2016-05-06 03:43 +1000
            Re: Whittle it on down Stephen Hansen <me+python@ixokai.io> - 2016-05-05 11:55 -0700
        Re: Whittle it on down Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-05-05 20:49 +0300
          Re: Whittle it on down Steven D'Aprano <steve@pearwood.info> - 2016-05-06 04:14 +1000
            Re: Whittle it on down Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-05-05 21:27 +0300
              Re: Whittle it on down Random832 <random832@fastmail.com> - 2016-05-05 14:54 -0400
              Re: Whittle it on down Steven D'Aprano <steve@pearwood.info> - 2016-05-06 10:57 +1000
                Re: Whittle it on down Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-05-06 07:19 +0300
    Re: Whittle it on down DFS <nospam@dfs.com> - 2016-05-05 08:31 -0400
      Re: Whittle it on down Steven D'Aprano <steve@pearwood.info> - 2016-05-06 03:54 +1000
        Re: Whittle it on down DFS <nospam@dfs.com> - 2016-05-05 17:36 -0400
      Re: Whittle it on down Stephen Hansen <me+python@ixokai.io> - 2016-05-05 11:56 -0700
        Re: Whittle it on down DFS <nospam@dfs.com> - 2016-05-05 17:45 -0400

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