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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_model(app_dot_model):
 """ Returns Django model class corresponding to passed-in `app_dot_model` string. This is helpful for preventing circular-import errors in a Django project. Positional Arguments: ===================== - `app_dot_model`: Django's `<app_name>.<model_name>` syntax. For example, the default Django User model would be `auth.User`, where `auth` is the app and `User` is the model. """


    try:
        app, model = app_dot_model.split('.')
    except ValueError:
        msg = (f'Passed in value \'{app_dot_model}\' was not in the format '
               '`<app_name>.<model_name>`.')
        raise ValueError(msg)

    return apps.get_app_config(app).get_model(model)