Paolino wrote:
> I thought rewriting __hash__ should be enough to avoid mutables problem but:
>
> class H(set):
> def __hash__(self)
> return id(self)
>
> s=H()
>
> f=set()
>
> f.add(s)
> f.remove(s)
>
> the add succeeds
> the remove fails eventually not calling hash(s).
>
Yes this is really strange.
from sets import Set
class H(Set):
def __hash__(self):
return id(self)
s=H()
f=set() #or f=Set()
f.add(s)
f.remove(s)
No errors.
So we had a working implementation of sets in the library an put a
broken one in the __builtins__ :(
Should I consider it a bug ?
Regards Paolino
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