[EMAIL PROTECTED] wrote:
This is basically in following form : a=iter(alist) zip(a, a, a) map(None, a , a, a) The gurus(one of the bot) said that it is very bad in that there is no contract saying zip/map would take one element from each iterable, in that order. There is only contract for the output(tuples, one from each iterables). Therefore, it is possible in some future version(though I very much doubt) that it can be implemented that 4(or whatever number) is taken from the iterables at a time, say for optimization purpose.
Seems like worst case, you wind up with a mangling of the ordering. Actually, worse than that. You could get "a"s (in your example above) of different sizes. That would be bad. The ordering I can live with. The variable sizes....not good. Point taken. I doubt they would do that as well. That would break Python's "few surprises" idioms.
- jmj
