Users of namedtuple: do you use the _source attribute?

[Gregory Ewing]

Steve D'Aprano wrote:
> "source_" is already a public name, which means that users could want to create
> fields with that name for some reason,

They could equally well want to define their own private
field called "_source".

IMO a better thing to do would have been to name
it "__source__". Dunder names are officially reserved
for use by the language or stdlib.

-- 
Greg