2009/6/1 秦锋 <feng.w....@gmail.com>
>
> a = set(a)
> a.discard("b")
> a = list(a)
>
==>I tried this, It works!
--
Chunlei Zhang
Ph.D. candidate
Major: Curriculum & Teaching
Scholar Interests: science education; teacher training ; teacher knowledge;
pck; concept map
Biology Teaching Club：http://groups.google.com/group/bioteahouse
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