[Tutor] call a def/class by reference

[Danny Yoo]

> Thanks for answering my question.  What I'm hoping to avoid is an
> explicit reference to any of the called functions within the program.
> By doing it that way, it would avoid a maintenance problem of having to
> remember to put a reference for every new function in the calling
> program.


In your list of requirements:

>    1.  gettting the input that consists of a function and its
>        parameters,
>    2.  determining if the function is on an approved function list,
>    3.  executing the function
>    4.  rinse, repeat.

the second one is probably the one that needs clarifying.

How do you know which functions should be callable? Adam's approach to
expressing that knowledge is to use a dictionary:

    d = {"foo" : foo}

And there are many other ways of doing this besides a hardcoded
dictionary.

Tell us more about what you mean for a function to be "approved", and we
should be able to suggest practical ways to do what you want.