exists. Two dots means up one package level. Three dots is up two levels, etc.
So if you execute ``from . import mod`` from a module in the ``pkg`` package
then you will end up importing ``pkg.mod``. If you execute ``from ..subpkg2
-imprt mod`` from within ``pkg.subpkg1`` you will import ``pkg.subpkg2.mod``.
+import mod`` from within ``pkg.subpkg1`` you will import ``pkg.subpkg2.mod``.
The specification for relative imports is contained within :pep:`328`.
:func:`importlib.import_module` is provided to support applications that