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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 get_data(city: Optional[str]) -> Dict[str, Any]: """ Use the Yahoo weather API to get weather information """

    req = urllib.request.Request(get_url(city))
    with urllib.request.urlopen(req) as f:
        response = f.read()
    answer = response.decode('ascii')
    data = json.loads(answer)
    r = data['query']['results']['channel']  # Remove some useless nesting
    return r