Stefan Ram wrote: > "ROGER GRAYDON CHRISTMAN" <d...@psu.edu> writes: >>On Wed, Oct 4, 2017 22:42 Stefan Ram (r...@zedat.fu-berlin.de) wrote: >>Steve D'Aprano <steve+pyt...@pearwood.info> writes: >>>>So, "bottom-up" in this case means: iterators should be >>>>taught before for-loops. >>>>Why? >>The easy answer here is to not use the range in the first for loop. > > I never intended to use »range«. But I also will not use lists. > > Very early in the course, I teach numeric and string literals: > > 1, 2.3, 'abc' > > then come operators, functions and »if«, »while« and »try«. > But neither »range« nor lists have been shown so far. > > The basic course may already and there after about 12 - 18 hours. > (This time includes many exercises in the classroom.) > > But if I have time to introduce »for«, I'll do it as follows > at this point in the course: > > <now speaking like a teacher:>
To me it looks like Roger has some practical experience in that area. You should seriously consider his advice lest your students end up missing the forest for the trees. -- https://mail.python.org/mailman/listinfo/python-list
