[Tutor] Problem Stripping

[Mark Lawrence]

On 30/03/2012 18:09, leam hall wrote:
> Python 2.4.3 on Red Hat 5. Trying to use strip to remove characters
> but it doesn't seem to work like I thought.

What do you expect it to do?

>
>
> res = subprocess.Popen(['uname', '-a'], stdout=subprocess.PIPE)
> uname = res.stdout.read().strip()
>
>>>> uname
> 'Linux myserver 2.6.18-274.el5PAE #1 SMP Fri Jul 8 17:59:09 EDT 2011
> i686 i686 i386 GNU/Linux'
>
>>>> uname.strip(':')
> 'Linux myserver 2.6.18-274.el5PAE #1 SMP Fri Jul 8 17:59:09 EDT 2011
> i686 i686 i386 GNU/Linux'
>
>>>> 'www.example.com'.strip('cmowz.')
> 'example'
>
> Thoughts?
>
> Leam

Python 2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit 
(Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
 >>> help(''.strip)
Help on built-in function strip:

strip(...)
     S.strip([chars]) -> string or unicode

     Return a copy of the string S with leading and trailing
     whitespace removed.
     If chars is given and not None, remove characters in chars instead.
     If chars is unicode, S will be converted to unicode before stripping

So it appears that your examples are doing precisely what is defined above.

HTH.

-- 
Cheers.

Mark Lawrence.