[Python-Dev] Exceptions for readonly attributes

Guido van Rossum guido at python.org
Sat Mar 24 05:02:53 CET 2007

Sounds like something maybe to do in 3.0.

On 3/23/07, Raymond Hettinger <python at rcn.com> wrote:
> Re:  www.python.org/sf/1687163
> I noticed that RO members raise a TypeError upon an attempted write.  In contrast, we get an AttributeError when writing to a readonly property or to a readonly method (such as those for builtin types).
> IMO, the TypeError should really be an AttributeError.  However, changing it makes four of the tests fail.
> The question for you guys is whether or not to make the fix.
> Raymond
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--Guido van Rossum (home page: http://www.python.org/~guido/)

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