Fixed #8126: improved `admin.autodiscover()` to be more forgiving of invalid...

    """

    import imp

    from django.conf import settings

    for app in settings.INSTALLED_APPS:

        # For each app, we need to look for an admin.py inside that app's

        # package. We can't use os.path here -- recall that modules may be

        # imported different ways (think zip files) -- so we need to get

        # the app's __path__ and look for admin.py on that path.

        # Step 1: find out the app's __path__ Import errors here will (and

        # should) bubble up, but a missing __path__ (which is legal, but weird)

        # fails silently -- apps that do weird things with __path__ might

        # need to roll their own admin registration.

        try:

            app_path = __import__(app, {}, {}, [app.split('.')[-1]]).__path__

        except AttributeError:

            continue

        # Step 2: use imp.find_module to find the app's admin.py. For some

        # reason imp.find_module raises ImportError if the app can't be found

        # but doesn't actually try to import the module. So skip this app if

        # its admin.py doesn't exist

        try:

            imp.find_module("admin", __import__(app, {}, {}, [app.split(".")[-1]]).__path__)

            imp.find_module('admin', app_path)

        except ImportError:

            # there is no app admin.py, skip it

            continue

        # Step 3: import the app's admin file. If this has errors we want them

        # to bubble up.

        __import__("%s.admin" % app)