Decorator help

[Jason Swails]

On Wed, Mar 27, 2013 at 7:29 PM, Steven D'Aprano <
steve+comp.lang.python at pearwood.info> wrote:

>
> The one doesn't follow from the other. Writing decorators as classes is
> fairly unusual. Normally, they will be regular functions. If your
> decorator needs to store so much state that it needs to be a class,
> you're probably trying to do too much from a single decorator.
>
> There's more that you need to describe, such as what it is that the
> decorator actually does, and whether it does it once, when the decorator
> is called, or repeatedly, when the decorated method is called.
>
> The second case is the easiest. Suppose you have a class like this, with
> many methods which have code in common. Here's a toy example:
>
>
> def MyClass(object):
>     x = "class attribute"
>
>     def __init__(self, y):
>         self.y = y
>

In the spirit of nit-picking, I'll point out that Steven meant to use the
'class' keyword instead of 'def' for MyClass.


> def MyClass(object):
>     x = "class attribute"
>
>     def __init__(self, y):
>         self.y = y
>

And here as well.

It's potentially worth pointing out that this code will actually compile.
 It will even run, assuming you provide MyClass with a single argument.
 But it will always return None :).

As per usual, the response was thorough and helpful -- I appreciate
responses like these and how they've helped improve my command of Python.

All the best,
Jason
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