[issue19713] Deprecate various things in importlib thanks to PEP 451

[Arfrever Frehtes Taifersar Arahesis]

Arfrever Frehtes Taifersar Arahesis added the comment:

> New changeset 37caaf21f827 by Eric Snow in branch 'default':
> Issue 19713: Add PEP 451-related deprecations.
> http://hg.python.org/cpython/rev/37caaf21f827
> ...
> -        spec.loader.load_module(spec.name)
> +        try:
> +            _warnings
> +        except NameError:
> +            # We must be importing builtins in setup().
> +            spec.loader.load_module(spec.name)
> +        else:
> +            spec.loader.load_module(spec.name)

Is this correct?

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<http://bugs.python.org/issue19713>
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