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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def autodiscover_modules():
 """ Goes and imports the permissions submodule of every app in INSTALLED_APPS to make sure the permission set classes are registered correctly. """

    import imp
    from django.conf import settings

    for app in settings.INSTALLED_APPS:
        try:
            __import__(app)
            app_path = sys.modules[app].__path__
        except AttributeError:
            continue
        try:
            imp.find_module('permissions', app_path)
        except ImportError:
            continue
        __import__("%s.permissions" % app)
        app_path = sys.modules["%s.permissions" % app]
    LOADING = False