[3.6] bpo-30876: Relative import from unloaded package now reimports the package (GH-2639) by serhiy-storchaka · Pull Request #2676 · python/cpython

@serhiy-storchaka

…the package (pythonGH-2639)

instead of failing with SystemError.

Relative import from non-package now fails with ImportError rather than
SystemError..
(cherry picked from commit 8a9cd20)