[issue27487] -m switch regression in Python 3.5.2 (under rare circumstances)

[Nick Coghlan]

Nick Coghlan added the comment:

No changes to 2.7 - the import system logic there is fairly different, since it's still using the old pre-importlib implementation.

For the "package.__main__" case, you're right that we don't want to emit the warning for "-m package", but we *do* want to emit the warning if package.__init__ imports package.__main__ for some reason.

And that's an excellent point about "finding spec" being implementer focused jargon - would "finding module specification" be clearer?

I'd still like to have a link between the error message and the fact the function is called "find_spec", and the official expansion of the abbreviation is "module specification" (hence _ModuleSpec).

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<http://bugs.python.org/issue27487>
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