[Tutor] Problem Stripping

[Mark Lawrence]

On 30/03/2012 18:28, Joel Goldstick wrote:
> On Fri, Mar 30, 2012 at 1:25 PM, Joel Goldstick
> <joel.goldstick at gmail.com>  wrote:
>> On Fri, Mar 30, 2012 at 1:09 PM, leam hall<leamhall at gmail.com>  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.
>>>
>>>
>>> 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
>>> --
>>> Mind on a Mission<http://leamhall.blogspot.com/>
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>>
>> str.strip() removes characters from begining and end of the string --
>> Not any in between.  Notice
>>
>>>>> example = "www.example.com".strip("wcomx")
>>>>> example
>> '.example.'
>>>>>
>>
>> The x remains
>
>
> You could do list comprehension
>>
>>>> n = "".join([x for x in "this has : some : colons" if x not in ':'])
>>>> n
> 'this has  some  colons'
>>

Yuck :(

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.
 >>> "this has : some : colons".replace(':', '')
'this has  some  colons'

-- 
Cheers.

Mark Lawrence.