Re: [Python-Dev] (name := expression) doesn't fit the narrative of PEP 20

2018年4月27日 14:46:02 -0700

On 04/27/2018 05:11 PM, Tim Peters wrote:
> In this specific case, line-oriented coverage tools have missed 
> accounting for all possible code paths since day #1; e.g.,
> 
> x = f() or g()
> 
> You don't need to reply to messages so obviously irrelevant to the PEP 
> unless you want to. It's not like Guido will read them and go "oh! a 
> binding expression in a ternary conditional is a fundamentally new 
> potential problem for a line-oriented coverage tool! that's fatal" ;-)
FWIW, Ned Batchelder's 'coverage.py' does a good job with branch coverage.
I haven't seen anything in this discussion which indicates that binding
expressions will change that at all.
Tres.
-- 
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Tres Seaver +1 540-429-0999 [email protected]
Palladion Software "Excellence by Design" http://palladion.com
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