How to sort this kind of list easily?

[BruceKL WhoH]

Anthony Baxter:

	Oh,I didn't know that list.sort work like this. It's great. But what is 
decorate-sort-undecorate pattern ? Can you show me any helpful hints or hyperlinks?

======= 2004-08-20 18:38:05 Anthony Baxter wrote: =======

>On Fri, 20 Aug 2004 17:03:51 +0800, BruceKL WhoH <brucewhohkl at gawab.com> wrote:
>> Hi,all
>>      I have a list like [(id,string),...],for example:
>> 
>>      [(1,'xxxxx'),(7,'ppppp'),(4,'gggggg'),...]
>> 
>>          I want to sort this list according to the id of each element. After sorting,the list will become:
>> 
>>      [(1,'xxxxx'),(4,'gggggg'),(7,'ppppp')...]
>
>
>>>> l=[(1,'xxxxx'),(7,'ppppp'),(4,'gggggg'),(2,'ffff'),(12,'hhhhh')]
>>>> l.sort()
>>>> print l
>[(1, 'xxxxx'), (2, 'ffff'), (4, 'gggggg'), (7, 'ppppp'), (12, 'hhhhh')]
>
>list.sort sorts tuples by first argument, then second &c. If you want a
>custom sort order, look at the decorate-sort-undecorate pattern.
>
>Anthony
>-- 
>http://mail.python.org/mailman/listinfo/python-list
>.

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　　　　　　　　BruceKL WhoH
　　　　　　　　BruceWhoHKL at gawab.com
　　　　　　　　　　2004-08-23