[Python-ideas] Inline assignments using "given" clauses

Steven D'Aprano steve at pearwood.info
Sun May 13 07:28:16 EDT 2018

On Sun, May 13, 2018 at 10:53:50AM +1000, Cameron Simpson wrote:

> For myself, I'm not a fan of a narrow scope. I'd be happy with an inline 
> assignment landing in the function scope (or whatever the current innermost 
> scope is). Like normal assignments. In how many other places does Python 
> adopt a narrower scope than the function/method/class/module?

None except for comprehensions and generators. And may it stay that way 

> I'm going to digress into an explaination of this issue in Go here because 
> I want to highlight my dislike of easy accidental shadowing, which is a 
> problem in many areas, and I think that conflating inline assignment with 
> an implied narrow scope in Python would make this worse.

Thanks Cameron! This is a really good practical example of why narrow 
scopes should be avoided.


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