On Tue, 25 Jul 2006 02:49:06 GMT, Steve Jobless <[EMAIL PROTECTED]> wrote: >Hi, > >I just started learning Python. I went through most of the tutorial at >python.org. But I noticed something weird. I'm not talking about the >__private hack. > >Let's say the class is defined as: > > class MyClass: > def __init__(self): > pass > def func(self): > return 123 > >But from the outside of the class my interpreter let me do: > > x = MyClass() > x.instance_var_not_defined_in_the_class = 456 > >or even: > > x.func = 789 > >After "x.func = 789", the function is totally shot. > >Are these bugs or features? If they are features, don't they create >problems as the project gets larger?
If you do things like this, you will probably encounter problems, yes. Fortunately the solution is simple: don't do things like this ;) It is allowed at all because, to the runtime, "x.someattr = someval" is no different from "self.someattr = someval". The fact that a different name is bound to a particular object doesn't matter. Jean-Paul -- http://mail.python.org/mailman/listinfo/python-list
