[issue12703] Improve error reporting for packaging.util.resolve_name

[Éric Araujo]

Éric Araujo <merwok at netwok.org> added the comment:

FYI, here is code that can handle arbitrary dotted names: <http://svn.eby-sarna.com/Importing/peak/util/imports.py?view=markup>.  I haven’t checked if its error reporting has the problem we’re discussing in this report.

An alternative would be to use colon notation, e.g. package.submodule:Thing.Nested.attribute.

My preference is still for find_object, using dots and with the nesting prohibition.

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nosy: +erik.bray

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<http://bugs.python.org/issue12703>
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