Christoph Zwerschke <[EMAIL PROTECTED]> writes:
>>>- Because sets can only contain immutable values
>
> Mike Meyer wrote:
>
>> Not true. Sets can only contain *hashable* objects, which isn't the
>> same thing.
>
> I trusted the doco which defines a set as "an unordered collection of
> immutable values" (http://docs.python.org/lib/types-set.html).
If the hash changes, you've screwed up the set. What it really should
say is "collection of objects with fixed hashes", or words to that
effect. Do you want to file a PR on this?
> Anyway, the problems stays the same.
How so? As I demonstrated, you can subclass any class that doesn't
have a hash to add one, and then use the subclass, which - except for
having a hash - will have exactly the same behavior as your original
class.
<mike
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