Tobias Weber <towb <at> gmx.net> writes: > > Hi, > whenever I type an "object literal" I'm unsure what optimisation will do > to it. > > def m(arg): > if arg & set([1,2,3]): > return 4 > > Is the set created every time the method is called?
Yes, and the list. > What about a > frozenset? Yep. > Or tuple vs list? Tuples containing other immutable literals can be optimized. (In cpython anyway.) > After how many calls per second does it pay > to save it at the module level? Ask the profiler. Probably not many. > Would anybody else find this ugly? I do it all the time. -- http://mail.python.org/mailman/listinfo/python-list
