On 06/19/2016 09:01 AM, Ethan Furman wrote: > On 06/19/2016 04:56 AM, Joonas Liik wrote: >> On 18 June 2016 at 23:47, Ethan Furman wrote: >>> On 06/18/2016 07:05 AM, Joonas Liik wrote: > >>>> the leading dot does not resolve the ambiguity that arises from: >>>> >>>> with ob_a: >>>> with ob_b: >>>> .attr_c = 42 # which object are we modifying right now? >>> >>> >>> The innermost one. Why would it be anything else? >> >> What if ob_b does not have attribute attr_c but ob_a does? > > Good question. I would say that _only_ the innermost with object is > searched, and if it doesn't have the requested attribute an > AttributeError is raised. Otherwise, as you say, it could be a > nightmare to maintain.
But that wouldn't work either because it would make it impossible to *set* attributes on an object. If ob_a had attr_c but object ob_b did not, should it set the attribute on ob_b or overwrite the attribute on ob_a? Python's dynamic nature just doesn't lend itself to this kind of ambiguity. -- https://mail.python.org/mailman/listinfo/python-list
