Hi, I am curious when one should implement a "__call__()" and when a "__getitem__()" method.
For example, I want to display functions and data in the same plot. For a function, the natural interface would to be called as "f(x)", while the natural interface for data would be "f[x]". On the other hand, whether a certain data object is a function or a data table is just an inner detail of the object (imagine f.e. a complex function that contains a data table as cache), and there is no reason to distinguish them by interface. So what is the reason that Python has separate __call__()/() and __getitem__()/[] interfaces and what is the rule to choose between them? Regards Ole -- http://mail.python.org/mailman/listinfo/python-list
