Hi Yuri, I have not tested them for speed, but:
- Named tuples have no instance dictionary, so their instances take no more space than a regular tuple (for example, casting thousands of sql records to named tuples has zero memory overhead). - They also use C-speed attribute lookup using property() and itemgetter() I don’t really think that speed of collection (which is built into python 2.6+) is much slower than dicts etc. On Jul 4, 2011, at 7:41 AM, burc...@gmail.com wrote: > Hi Paul, > > Is it correct that nametuple construction is much slower than for > normal ones or is this true only in older python versions? > > On Mon, Jul 4, 2011 at 1:47 AM, paulpmillr <paulpmi...@gmail.com> wrote: >> Hello. >> >> I've added an implementation for named tuples query set, see >> https://code.djangoproject.com/ticket/15648 >> >> - Named tuples could be iterated over with order saving (like lists / >> tuples). >> - Properties there could be accessed with dot notation - post.topic >> (almost like dicts). >> - They could be converted both to dicts and lists >> - Easy debugging (pros over queryset.deferred()) >> - I've provided a fallback implementation of named tuple for python >> 2.5 users >> - Tests are there too. >> >> Named tuples eliminate neediness in values & values_list because they >> have all their features. >> >> What do you think about it? > > -- > Best regards, Yuri V. Baburov, Skype: yuri.baburov, MSN: bu...@live.com > > -- > You received this message because you are subscribed to the Google Groups > "Django developers" group. > To post to this group, send email to django-developers@googlegroups.com. > To unsubscribe from this group, send email to > django-developers+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/django-developers?hl=en. > -- You received this message because you are subscribed to the Google Groups "Django developers" group. To post to this group, send email to django-developers@googlegroups.com. To unsubscribe from this group, send email to django-developers+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-developers?hl=en.
