Re: string formatting

From	harrismh777 <harrismh777@charter.net>
Newsgroups	comp.lang.python
Subject	Re: string formatting
References	(1 earlier) <4dc3aaa0$0$4756$426a74cc@news.free.fr> <4dc3b54c$0$29991$c3e8da3$5496439d@news.astraweb.com> <mailman.1230.1304673808.9059.python-list@python.org> <4dc404b7$0$29991$c3e8da3$5496439d@news.astraweb.com> <RTXwp.18780$Ot6.17862@newsfe15.iad>
Message-ID	<D7Ywp.59690$0s5.13933@newsfe17.iad> (permalink)
Date	2011-05-06 14:39 -0500

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harrismh777 wrote:    OP wrote:

> (1) "the %s is %s" % ('sky', 'blue')
>
> (2) "the {0} is {1}".format('sky', 'blue')
>
> (3) "the {} is {}".format('sky', 'blue')

    On the other hand, consider this 3.x code snip:

    print("the %s is %d" % ('sky', 'blue'))


    That formatting will throw an exception, because the format 
construct is restricting the format entry to be a number, which 'blue' 
clearly isn't....

    The following print() is better, because *any* time or *most* types 
can be substituted and the 'polymorphism' of Python kicks in allowing 
for that, as so:

     print("the {} is {}".format('sky', 3.4))

     print("the {} is {}".format('sky', 'blue'))


     l=['cloudy', 'today']
     print("the {} is {}".format('sky', l))


    On the other hand,....     :)


kind regards,
m harris

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string formatting Jabba Laci <jabba.laci@gmail.com> - 2011-05-06 03:18 -0400
  Re: string formatting Web Dreamer <webdreamer@nospam.fr> - 2011-05-06 10:00 +0200
    Re: string formatting Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-06 08:46 +0000
      Re: string formatting Chris Rebert <clp2@rebertia.com> - 2011-05-06 02:23 -0700
        Re: string formatting Web Dreamer <webdreamer@nospam.fr> - 2011-05-06 14:10 +0200
          Re: string formatting nn <pruebauno@latinmail.com> - 2011-05-06 06:06 -0700
          Re: string formatting Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-06 14:33 +0000
          Re: string formatting Web Dreamer <webdreamer@nospam.fr> - 2011-05-10 16:15 +0200
            Re: string formatting Chris Angelico <rosuav@gmail.com> - 2011-05-11 00:43 +1000
        Re: string formatting Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-06 14:24 +0000
          Re: string formatting harrismh777 <harrismh777@charter.net> - 2011-05-06 14:22 -0500
            Re: string formatting harrismh777 <harrismh777@charter.net> - 2011-05-06 14:39 -0500
              Re: string formatting Ian Kelly <ian.g.kelly@gmail.com> - 2011-05-06 13:54 -0600
              Re: string formatting Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-07 02:30 +0000
              Re: string formatting alex23 <wuwei23@gmail.com> - 2011-05-08 22:47 -0700
            Re: string formatting Neil Cerutti <neilc@norwich.edu> - 2011-05-06 19:54 +0000
            Re: string formatting Terry Reedy <tjreedy@udel.edu> - 2011-05-06 16:54 -0400
            Re: string formatting Chris Angelico <rosuav@gmail.com> - 2011-05-07 10:09 +1000
            Re: string formatting Terry Reedy <tjreedy@udel.edu> - 2011-05-07 03:55 -0400
  Re: string formatting Raymond Hettinger <python@rcn.com> - 2011-05-10 10:20 -0700

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