def _fx_mapping(raw_rates):
    ''' Map raw output to clearer labels '''
    return {pair[0].lower(): {
        'timeStamp': pair[1],
        'bid': float(pair[2] + pair[3]),
        'ask': float(pair[4] + pair[5]),
        'high': float(pair[6]),
        'low': float(pair[7])
    } for pair in map(lambda x: x.split(','), raw_rates)}
Map raw output to clearer labels