this customize sort did not work ,what's wrong?

[thinke365]

jesus, now i fixed it, using odd lambda sort.
l.sort(lambda x,y: cmp(len(x), len(y)))
print l

BUT I AM STILL CONFUSED WHY COSTOMIZED SORT FAILED TO SORT AS IT IS 
PROGRAMMER!


thinke365 wrote:
> 
> i mean the output i want is:
> [ [1, 2], [1, 2, 3, 4], [1, 2, 3, 4, 5]], that is sort according to the
> length of the list element
> 
> thinke365 wrote:
>> 
>> l = list()
>> l1 = list((1, 2, 3, 4))
>> l2 = list((1,2))
>> l3 = list((1, 2, 3, 4, 5))
>> l.append(l1)
>> l.append(l2)
>> l.append(l3)
>> print l
>> 
>> def sort_by_list(E1, E2):
>>     print len(E1), len(E2)
>>     return len(list(E1)) > len(list(E2))
>> 
>> l.sort(cmp=sort_by_list)
>> print l
>> 
>> output:
>> [[1, 2, 3, 4], [1, 2], [1, 2, 3, 4, 5]]
>> 2 4
>> 5 2
>> [[1, 2, 3, 4], [1, 2], [1, 2, 3, 4, 5]]
>> 
>> the order of the elements in the list did not change!
>> 
> 
> 

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