[Tutor] Counting method calls

[Ricardo Aráoz]

Hi, I'm trying to count method calls. Tried this but...
>>>> class MyList(list):
> ...     def __init__(self):
> ...         self.calls = 0
> ...     def __getattr__(self, name):
> ...         self.calls += 1
> ...         return list.__getattribute__(self, name)
>
>>>> a = MyList()
>>>> a
> []
>>>> a.append(1)
>>>> a
> [1]
>>>> a.calls
> 88
>>>> a.append(3)
>>>> a.calls
> 88
>>>> a.sort()
>>>> a
> [1, 3]
>>>> a.calls
> 176

It's doing some strange things with self.calls.

I've also tried :

>>>> class MyList(list):
> ...     def __init__(self):
> ...         self.calls = 0
> ...     def __getattribute__(self, name):    # Here's the change
> ...         self.calls += 1
> ...         return list.__getattribute__(self, name)
>
>>>> a = MyList()
>>>> a
> []
>>>> a.append(1)
  File "<input>", line 5, in __getattribute__
  File "<input>", line 5, in __getattribute__
.... snipped .....
  File "<input>", line 5, in __getattribute__
  File "<input>", line 5, in __getattribute__
RuntimeError: maximum recursion depth exceeded

Any idea what's going on in both tries? And how can I intercept method
calls without defining all of list's methods.

Thanks