On 11/30/2014 2:27 PM, Ethan Furman wrote: > On 11/30/2014 11:15 AM, Guido van Rossum wrote: >> On Sun, Nov 30, 2014 at 6:15 AM, Brett Cannon wrote: >>> On Sat, Nov 29, 2014, 21:55 Guido van Rossum wrote: >>>> >>>> All the use cases seem to be about adding some kind of getattr hook >>>> to modules. They all seem to involve modifying the CPython C code >>>> anyway. So why not tackle that problem head-on and modify module_getattro() >>>> to look for a global named __getattr__ and if it exists, call that instead >>>> of raising AttributeError? >>> >>> Not sure if anyone thought of it. :) Seems like a reasonable solution to me. >>> Be curious to know what the benchmark suite said the impact was. >> >> Why would there be any impact? The __getattr__ hook would be similar to the >> one on classes -- it's only invoked at the point where otherwise AttributeError >> would be raised. > > I think the bigger question is how do we support it back on 2.7? I do not understand this question. We don't add new features to 2.7 and this definitely is one. -- Terry Jan Reedy
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