[Tutor] Need to call a custom/magic method on calling of every Class methods

[Steven D'Aprano]

On Thu, Dec 17, 2015 at 05:18:26PM +0530, Sunil Tech wrote:
> Hi Tutor,
> 
> I am searching for any magic method/or any method that calls on every
> calling of the Class methods.
[...]
> Is there any magic method that is auto called on every call of these Class
> Methods?

No, not really, but you can get *close* to what you want. You can't 
intercept *calling* the methods, but you can intercept the attribute 
lookup:


class A(object):
    def __getattribute__(self, name):
        attr = super(A, self).__getattribute__(name)
        if callable(attr):
            print(name)
        return attr
    def one(self):
        return 1
    def two(self):
        return 2


But beware that this will slow down all attribute access.

This is possibly the simplest solution. Perhaps a better solution would 
be to create a custom Method descriptor, and then modify the class to 
use this descriptor instead of standard methods. But this is much 
more work.



-- 
Steve