[Python-Dev] Overloading comparison operator for lists (original) (raw)
Steven D'Aprano steve at pearwood.info
Wed May 29 08:44:25 EDT 2019
- Previous message (by thread): [Python-Dev] Overloading comparison operator for lists
- Next message (by thread): [Python-Dev] [PEP 558] thinking through locals() semantics
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Hi Montana,
As Cameron Simpson already pointed out, your query is off-topic for the Python-Dev mailing list and should be taken to the Python-Ideas mailing list, which is for speculative discussion of new designs.
Like Cameron, I've CCed Python-Ideas. Please send any follow-ups to that list and not Python-Dev.
You asked this question:
On Tue, May 28, 2019 at 09:35:51PM -0600, Montana Burr wrote:
Ok, now I'm mildly curious to knpw:
What is the justification for causing list == 3 to evaluate to False, besides the obvious "a list cannot equal a number"?
I concur with Terry Reedy -- what more justification is needed? A list cannot equal a number, so the default behaviour ought to be to return False. What would you have the default behaviour be?
People have already suggested that getting the numpy-style behaviour is
simple with a list comprehension, but the other technique is to subclass
list, override __eq__ and give it the behaviour you want.
-- Steven
- Previous message (by thread): [Python-Dev] Overloading comparison operator for lists
- Next message (by thread): [Python-Dev] [PEP 558] thinking through locals() semantics
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]