[issue12707] Deprecate addinfourl getters

[Éric Araujo]

Éric Araujo <merwok at netwok.org> added the comment:

> For these two reasons I propose to:
>  * document the 3 attributes as the suggested way to access this
>    information;
>  * deprecate the 3 getters;
>  * avoid to document the now undocumented getcode();
+1

> The addclosehook class could be provided via an alternative constructor
I can’t say why, but I don’t like that.

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nosy: +eric.araujo

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<http://bugs.python.org/issue12707>
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