> class testObj(object): > _rules = list() > def evalRules(self): > for r in _rules: > r() > def rule(func): > if not func in func.__class__._rules: > ... > def arule(self): > print a
Can you explain in plain English what testObj does? I don;t understand the comncept you are trying to represent in this testObj. It seems to be executing a list of its own methods? And its methods when executed add them selves to the list?! > trying to do is make a collection of validation rules that can be > iterated and capture raised exceptions to be returned at the end of > eval rules. I'd expect the rules to be external to the class. Either functions or perhaps methods of another object that gets passed to testObj. >I am trying to replace somethng that looks like this: > >class testObj(object): > def _init__(self): > self._rules = list((self.arule, > self.anotherrule)) > def evalRules(self): Yes that's how I'd expect to find it although perhaps with an addRule() method for extending the rule set. But it really depends on what the responsibilities of testObj are. Is it an object for testing other objects or simply an object for testing the concept of running several rules? > It would be too easy to add a rule twice or forget to add the rule > to > the list in a subclass. I thought that using a decorator would make > it > obvious. Not sure I understand this bit. If you ony want a rule once you could use a Set instead of a list. And how the above prevents subclasses from forgetting a rule isn't clear to me. I think I'm missing the grand plan here. Alan G. _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
