Reinhold Birkenfeld wrote: > skull wrote: >> Hi everybody, it is my first post in this newsgroup. >> I am a newbie for python though I have several years development experience >> in c++. >> recently, I was stumped when I tried to del item of a list when iteration. >> >> here is the wrong way I did: >> >> lst = [1, 2, 3] >> for i in lst: >> print i >> if i == 2: >> lst.remove(i) >> >> the result is: >> >> 1 >> 2 >>>>> >> >> as you would see, '3' is missing. this problem is caused by 'lst.remove(i)'. >> apparently, 'marked-and-sweep' is a solution to deal with this issue. >> but I think there SHOULD BE more 'wise' trick. I want to get your help. > > Quick solution: > > for i in lst[:] > > iterates over a copy.
Addition: In Py2.4, I can't find a problem with for i in reversed(lst) Any objections? Reinhold -- http://mail.python.org/mailman/listinfo/python-list
