On Sun, Nov 15, 2009 at 8:57 PM, Marc Tompkins <marc.tompk...@gmail.com> wrote: > On Sun, Nov 15, 2009 at 4:11 PM, Stephen Nelson-Smith <sanel...@gmail.com> > wrote: >> >> > import gzip >> > from heapq import heappush, heappop, merge >> >> Is this a preferred method, rather than just 'import heapq'? >> > It has a couple of advantages: ... > - efficiency: you import only what you actually need to use. Importing all > of a gigantic package to use one or two methods is wasteful;
I can't think of any way in which import heapq is "wasteful" compared to from heapq import heappush, heappop, merge other than a tiny efficiency in name lookup (it's faster to lookup just heappush than heapq.heappush). In either case, the entire module is loaded. The only difference is in which names are introduced into the importing module's namespace. Kent _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
