yyc at seety.org
Thu Sep 30 23:54:59 CEST 2010
state = 'a'
cls.state = 'changed'
Since new-style classes are just type objects, singleton class works just
fine as a state container.
A standalone dictionary can serve the same purpose, but the states have to
be accessed through __getitem__() instread of __getattribute__().
On Thu, Sep 30, 2010 at 09:27, Mark Erbaugh <mark at microenh.com> wrote:
> Would the following code be appropriate to implement a singleton instance?
> class Singleton(object):
> """ class that will have only one instance in the application """
> singleton = Singleton()
> del Singleton
> The single instance of the class would be instantiated the first time the
> module is imported. It would be impossible for any other code to instantiate
> another instance.
> I had originally thought of a slightly shorter, but less Pythonic version
> class singleton(object)
> """ note the non-standard lowercase class name """
> singleton = singleton()
> Comments are welcome.
> CentralOH mailing list
> CentralOH at python.org
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