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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 add_params_to_qs(query, params):
 """Extend a query with a list of two-tuples."""

    if isinstance(params, dict):
        params = params.items()
    queryparams = urlparse.parse_qsl(query, keep_blank_values=True)
    queryparams.extend(params)
    return urlencode(queryparams)