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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 _make_headers(config, kwargs):
 """ Replace the kwargs with one where the headers include our user-agent """


    headers = kwargs.get('headers')
    headers = headers.copy() if headers is not None else {}
    headers['User-Agent'] = config.args.user_agent

    kwargs = kwargs.copy()
    kwargs['headers'] = headers
    return kwargs