>>> a=["b","c","t","y","b","b","b","b"]
>>> a=[i for i in a if i != 'b']
>>> a
['c', 't', 'y']
>>> a=["b","c","t","y","b","b","b","b"]
>>> a = filter(lambda x: x != 'b', a)
>>> a
['c', 't', 'y']
2009/6/1 秦锋 <feng.w....@gmail.com>
>
> a = set(a)
> a.discard("b")
> a = list(a)
>
> On 6月1日, 下午8时48分, DiveIntoGAE <taogf1...@gmail.com> wrote:
> > >>> a=["b","c","t","y","b","b","b","b"]
> > >>> a
> >
> > ['b', 'c', 't', 'y', 'b', 'b', 'b', 'b']>>> for i in a:
> >
> > a.remove("b") # why can't i remove all the "b" from list a?
> >
> > >>> a
> >
> > ['c', 't', 'y', 'b'] # this is the result after the for cycle>>>
> a.remove("b")
> > >>> a
> >
> > ['c', 't', 'y'] # i need to remove the last "b" a second time
> >
> >
> >
> >
> >
>
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