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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 __yahoo_request(query):
 """Request Yahoo Finance information. Request information from YQL. `Check <http://goo.gl/8AROUD>`_ for more information on YQL. """

    query = quote(query)
    url = 'https://query.yahooapis.com/v1/public/yql?q=' + query + \
        '&format=json&env=store://datatables.org/alltableswithkeys'

    response = urlopen(url).read()

    return json.loads(response.decode('utf-8'))['query']['results']