Peter Otten wrote:
> Ju Hui wrote:
>
>> cool!
>> thanks you all!
>> I choose
>> a=set(range(100000))
>> b=set(range(50000))
>> a.symmetric_difference(b)
>> certainly,the real data not range(), I am satisfied the performance of
>> set.difference
>>
>> thank you all again!
>
> Be warned that this may /add/ items to a:
>
>>>> set("abc").symmetric_difference("bcd")
> set(['a', 'd'])
>
> If your subject is correct you want difference(), not
> symmetric_difference().
>
> Peter
Whoops. My bad. Peter is correct.
-Larry
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