for i in list - change a list inside a for loop?

[dsavitsk]

"Albert Hofkamp" <hat at se-46.wpa.wtb.tue.nl> wrote in message
news:slrnb66opl.g1l.hat at se-46.wpa.wtb.tue.nl...
> On Sat, 01 Mar 2003 19:37:03 +0100, Klaus Meyer <km-news1 at onlinehome.de>
wrote:
> > How to remove a found element from a list in a for-loop?
> >
> > x=["A", "B", "C", "D"]
> > for i in x:
> > if i=="C": del x[this one, but how?]
>
> I normally construct a new list on the fly as in
>
> newlist=[]
> for i in x:
>    if i!='C': newlist.append(i)
> x=newlist
>
> This is very clear code, and since Python does reference counting the
> elements are not really copied, so speed should be managable.

why not ...

while 1:
    try:
        x.remove('C')
    except:
        break

which might not be as fast [1], but is very readable.

[1] I have no idea about this, but it seems that it is going to loop less
times than the other options.

-d