Need to call functions/class_methods etc using string ref :How

[Bruno Desthuilliers]

Donn Ingle a écrit :
>>I see someone already showed you eval.  Eval is evil.  Don't use it. 
>>Especially if the functions are coming to you from a public URL!
> 
> Yes, I suggested to him (by email) this:
> 
> thisinstance =  SomeObject.__class__.__dict__
> <Then you have a list of strings that may be function names, so:>

This will only get attributes defined in SomeObject.__class__ - not the 
one defined in the parent classes. Nor methods dynamically bound to a 
specific instance.

> for f in yourlist:
>  if f in thisinstance: eval(f)(params)
 >
> Which would vet the functions too.

You *still* don't need eval here.

target = <module or any other objet here>
for funcname in funclist:
   func = getattr(target, funcname, None)
   if callable(func):
     func(*args, **kwargs)


I've almost never had a real use case for eval (or exec) in 7 years.