[Python-ideas] Dynamic getting of __doc__ of a function
steve at pearwood.info
Sun Oct 7 04:31:01 EDT 2018
On Sun, Oct 07, 2018 at 09:25:13AM +0200, Marko Ristin-Kaufmann wrote:
> I'm working on decorators that have a dynamic __doc__ property computed at
> runtime and not at decoration time.
You mean like this?
py> class X:
... def __doc__(self):
... return "NOBODY expects the %s Inquisition!" % self.nationality
... def __init__(self, nationality):
... self.nationality = nationality
py> a = X("Spanish")
py> b = X("Belgian")
'NOBODY expects the Spanish Inquisition!'
'NOBODY expects the Belgian Inquisition!'
The only downside is that help(a) doesn't do the right thing. I believe
that counts as a bug in help().
> The decorator must return the wrapper as a function and can not return a
> callable object with __call__ since the "self" argument would not be
> properly passed through the decorator.
Sorry, I don't get this. Can you demonstrate? Code speaks much louder
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