"vinjvinj" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > I'm building an application with cherrypy and have started using > decorators quite extensively. A lot of my exposed functions look like: > > @expose > @startTransactrionAndBuildPage > @partOfTabUi(tabId) > @convert(arg1=int, arg2=str) > def do_main_page(self, arg1, arg2): > some code > > > I've become really fond of decorators and use them quite a lot. I've > also ready that function calls are expensive in python. In the above > example, does the interpreter call 5 different functions?
As Alex said, perhaps. A decorator that would not result in a runtime call would be one that, for example, registers the function somewhere and returns it unchanged and unwrapped. @expose and @partOfTabUI both seem like they might do something like that. IF the overhead becomes a problem, and if you use the same stack (or parts of a stack) of decorators for multiple functions, then you could write a few decorators that combine multiple actions with one call. Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
