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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 serve_assets(path):
 """Serve Nikola assets. This is meant to be used ONLY by the internal dev server. Please configure your web server to handle requests to this URL:: /assets/ => output/assets """

    res = os.path.join(app.config['NIKOLA_ROOT'],
                       _site.config["OUTPUT_FOLDER"], 'assets')
    return send_from_directory(res, path)