What book or resource would you recommend to learn advanced Python? (other than python docs)
On Jun 30, 7:49 am, James Bennett <ubernost...@gmail.com> wrote: > On Mon, Jun 29, 2009 at 5:19 PM, Mark Jones<mark0...@gmail.com> wrote: > > What is the python Magic going on here to make this possible? > > So, you want to read up on how Python descriptors work. > > One application of a descriptor is the ability to create something > which behaves like a "normal" attribute, but under the hood calls a > method to return the actual value. In this case, Django takes > advantage of that to tell whether the manager attached to the class is > being accessed from the class itself or from an instance, and raises > an exception in the latter case. > > > My background is C++ and these look like methods/objects that are > > static to the class, not part of the instances. I just can't figure > > out how to declare and instantiate them in python. > > You may want to step back a bit and re-think how you're approaching > Python; truly "static" class members -- of the type you'd find in C++ > -- are very rarely actually needed/used. > > This is actually targeted more at Java folks, but you may want to have > a look at Phillip Eby's old rant "Python is not Java"; it covers some > common cases where directly bringing over ideas from other languages > isn't the best way to approach programming in Python: > > http://www.dirtsimple.org/2004/12/python-is-not-java.html > > -- > "Bureaucrat Conrad, you are technically correct -- the best kind of correct." --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
