human
What is a Python program to determine the format given the following:
Complete the below
def EncodeData(chart, series, y_min, y_max, encoder):

    ''''Format the given data series in plain or extended format.
    Use the chart\'s encoder to determine the format. The formatted data will
    be scaled to fit within the range of values supported by the chosen
    encoding.
    Args:
    chart: The chart.
    series: A list of the the data series to format.
each list element is
    a list of data points.
    y_min: Minimum data value. May be None if y_max is also None
    y_max: Maximum data value. May be None if y_min is also None
    Returns:
    A dictionary with one key, \'data\', whose value is the fully encoded series.'
    '''
assistant
#Here is Python program to determine the format.
    assert ((y_min is None) == (y_max is None))
    if (y_min is not None):
        def _ScaleAndEncode(series):
            series = ScaleData(series, y_min, y_max, encoder.min, encoder.max)
            return encoder.Encode(series)
        encoded_series = [_ScaleAndEncode(s) for s in series]
    else:
        encoded_series = [encoder.Encode(s) for s in series]
    result = JoinLists(**{'data': encoded_series})
    result['data'] = (encoder.prefix + result['data'])
    return result