On Wed, Jun 17, 2009 at 3:54 PM, ssc<steven.samuel.c...@gmail.com> wrote: > Wow! Didn't expect that kind of instant support. Thank you very much, > I'll give both zip and enumerate a try. > > The code I've shown is actually copied pretty straight from a Django > form class, but I didn't want to mention that as not to dilute the > conversation. Don't think it matters, anyway. This is the relevant > excerpt: > > from django.forms import Form > > class SignupForm(Form): > > titles = ['Dr', 'Miss', 'Mr', 'Mrs', 'Ms',] > title_choices = [(0, '')] + list((titles.index(t)+1, t) for t in > titles) > > Now that I look at it again, it seems odd to me to not have the code > e.g. in __init__(...), but just 'class-global'. > Still, that does not seem a reason for titles not to be not defined, > as I do define it just in the line above. > > Does the generator expression have its own little namespace or so ?
No, which leads to the common "WTF?" reaction upon seeing stuff like: >>> funcs = ((lambda: x) for x in range(7)) >>> list_of = list(funcs) >>> list_of[0]() 6 Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list