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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 _extract_query(self, redirect_url):
 """Extract query parameters from a url. Parameters redirect_url (str) The full URL that the Uber server redirected to after the user authorized your app. Returns (dict) A dictionary of query parameters. """

        qs = urlparse(redirect_url)

        # Implicit Grant redirect_urls have data after fragment identifier (#)
        # All other redirect_urls return data after query identifier (?)
        qs = qs.fragment if isinstance(self, ImplicitGrant) else qs.query

        query_params = parse_qs(qs)
        query_params = {qp: query_params[qp][0] for qp in query_params}

        return query_params