Add tests for "import", pkgutil.resolve_name() and unittest.mock.path()
for cases when "import a.b as x" and "from a import b as x" give
different results.
(cherry picked from commit c0eaa232f6)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
gh-108303: Move `double_const` to `test_import` where it belongs (GH-112108)
(cherry picked from commit 0738b9a338)
Co-authored-by: Nikita Sobolev <mail@sobolevn.me>
* bpo-39336: Allow setattr to fail on modules which aren't assignable
When attaching a child module to a package if the object in sys.modules raises an AttributeError (e.g. because it is immutable) it causes the whole import to fail. This now allows immutable packages to exist and an ImportWarning is reported and the AttributeError exception is ignored.
