[Python-Dev] cmp= & key= (Re: Proposed change to logging.basicConfig)

[Terry Reedy]

On 3/29/2011 4:02 PM, Matthew Woodcraft wrote:
> Terry Reedy<tjreedy at udel.edu>  wrote:
>> # Experiment with 2.7 shows that cmp wins. Though too late to change, I
>> consider this the worst choice of three. I think an exception should be
>> raised. Failing that, I think key should win on the basis that if one
>> adds a 'new-fangled' key func to an existing call with cmp (and forgets
>> to remove cmp), the key func is the one intended. Also, the doc clearly
>> indicates that key is considered superior to cmp.
>
> Neither 'wins': cmp is applied to the output of key.

Added to http://bugs.python.org/issue11712 (for 2.7 only ;-)

> I agree that it would have been worth documenting this explicitly.

-- 
Terry Jan Reedy