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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 get_category_model():
 """ Return the category model to use. This function reads the :ref:`FLUENT_BLOGS_CATEGORY_MODEL` setting to find the model. """

    app_label, model_name = appsettings.FLUENT_BLOGS_CATEGORY_MODEL.rsplit('.', 1)
    try:
        return apps.get_model(app_label, model_name)
    except Exception as e:  # ImportError/LookupError
        raise ImproperlyConfigured("Failed to import FLUENT_BLOGS_CATEGORY_MODEL '{0}': {1}".format(
            appsettings.FLUENT_BLOGS_CATEGORY_MODEL, str(e)
        ))