[Python-Dev] Python's C interface for types (original) (raw)

Aahz aahz at pythoncraft.com
Fri Jan 26 22:38:35 CET 2007

On Fri, Jan 26, 2007, Giovanni Bajo wrote:

On 26/01/2007 17.03, Thomas Wouters wrote:

There's no strict requirement that equal objects must have equal hashes, Uh? I thought that was the only strict requirement of hash. In fact the docs agree: ==================================================== hash( self) Called for the key object for dictionary operations, and by the built-in function hash(). Should return a 32-bit integer usable as a hash value for dictionary operations. The only required property is that objects which compare equal have the same hash value; [...] ====================================================

Possibly the docs should be updated, but this is only intended to apply to objects of the same type.

I personally consider very important that hash(5.0) == hash(5) (and that 5.0 == 5, of course).

Well, sure, but That's Different.

Aahz (aahz at pythoncraft.com) <*> http://www.pythoncraft.com/

"I disrespectfully agree." --SJM

More information about the Python-Dev mailing list