On Thu, Feb 26, 2009 at 4:08 PM, Peter Billam <pe...@www.pjb.com.au> wrote:
> On 2009-02-26, Clarendon <jine...@hotmail.com> wrote:
>> Hi. This must be a simple command but I just can't find it in the
>> Phthon manual. How do I delete all items with a certain condition from
>> a list? For instance: > L=['a', 'b', 'c', 'a']
>> I want to delete all 'a's from the list. > But if L.remove('a')
>> only deletes the first 'a'. How do you delete all 'a's?
>
> L2 = list(set(L))
>
> works for me...
A. That doesn't by itself remove all the 'a's, although it does remove
all but 1 'a'
B. That also removes all but one instance of *everything* in the list,
not just 'a'
C. That is lossy in that it completely loses the ordering of the original list
Cheers,
Chris
--
Follow the path of the Iguana...
http://rebertia.com
--
http://mail.python.org/mailman/listinfo/python-list
