[Python-Dev] Dict suppressing exceptions

[M.-A. Lemburg]

Michael Chermside wrote:
>> How about we change unicode-vs-str __eq__ to
>> issue a warning (and return False) instead of raising
>> UnicodeException?
>       [... Marc-Andre Lemburg agrees ...]
>> Great! Now we need someone to volunteer to write a patch (which should
>> include doc and NEWS updates) in time for beta 3 (Aug 18).
> 
> I don't *strongly* object to this consensus, but if you haven't
> glanced at my original example, take a look - it might convince you.
> The proposed solution will not help with my example. I'm not sure the
> motivation for breaking code like that example -- the bug-hunting
> motivation is satisfied by issuing a warning as Michael Urman proposes,
> then use an exception after one more release when people have had time
> to fix their code.

The warning framework gives programmers great flexibility in handling
these situation:

* they can silence the warning, just report it once, always report it
* they can have the warning raise an exception
* they can log the warning in some way

It's very flexible to accommodate for all kinds of ways to handle
the situation.

By introducing a new category of warning for these Unicode-related
warnings, adding specific warning filters will be easy.

-- 
Marc-Andre Lemburg
eGenix.com

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