On Mar 5, 8:44 pm, Steven D'Aprano <[EMAIL PROTECTED] cybersource.com.au> wrote: > But what about classes? Are they singletons? Obviously classes aren't > Singleton classes, that is, given an arbitrary class C you can create > multiple instances of C. But what about class objects themselves? I've > found a few odd references to "classes are singletons", but nothing in > the language reference.
Probably because "singleton" is the wrong word. A singleton means there is one instance of a type; classes are instances of "type" which can have many instances so classes are not singletons. Anyway, the answer to what you are probably asking is No. Try this: >>>import module >>>c1 = module.Someclass >>>reload(module) >>>c2 = module.Someclass >>>c1 is c2 For that matter, try this: >>>import module >>>c1 = module.Someclass >>>module.Someclass = some_other_class() >>>c2 = module.Someclass >>>c1 is c2 Carl Banks -- http://mail.python.org/mailman/listinfo/python-list
