Iain King wrote: > On Jan 27, 10:20 am, Floris Bruynooghe <floris.bruynoo...@gmail.com> > wrote: >> One thing I ofter wonder is which is better when you just need a >> throwaway sequence: a list or a tuple? E.g.: >> >> if foo in ['some', 'random', 'strings']: >> ... >> if [bool1, bool2, boo3].count(True) != 1: >> ... >> >> (The last one only works with tuples since python 2.6) >> >> Is a list or tuple better or more efficient in these situations? >> >> Regards >> Floris >> >> PS: This is inspired by some of the space-efficiency comments from the >> list.pop(0) discussion. > > I tend to use tuples unless using a list makes it easier to read. For > example: > > if foo in ('some', 'random', 'strings'): > > draw.text((10,30), "WHICH IS WHITE", font=font) > draw.line([(70,25), (85,25), (105,45)]) > > I've no idea what the performance difference is; I've always assumed > it's negligible.
Tuples are a faster to create than lists, so if you create lots of them and don't need the list features, use tuples. -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Jan 27 2010) >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ ::: Try our new mxODBC.Connect Python Database Interface for free ! :::: eGenix.com Software, Skills and Services GmbH Pastor-Loeh-Str.48 D-40764 Langenfeld, Germany. CEO Dipl.-Math. Marc-Andre Lemburg Registered at Amtsgericht Duesseldorf: HRB 46611 http://www.egenix.com/company/contact/ -- http://mail.python.org/mailman/listinfo/python-list