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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 geocode(address, required_precision_km=1.):
 """ Identifies the coordinates of an address :param address: the address to be geocoded :type value: String :param required_precision_km: the maximum permissible geographic uncertainty for the geocoding :type required_precision_km: float :returns: dict :example: {'lat': 38.89767579999999, 'lon': -77.0364827} """

    geocoded = geocoder.google(address)
    precision_km = geocode_confidences[geocoded.confidence]

    if precision_km <= required_precision_km:
        (lon, lat) = geocoded.geometry['coordinates']
        return {'lat': lat, 'lon': lon}
    else:
        raise ValueError("Address could not be precisely located")