def __init__(self, chart, is3d=False, angle=None):
    """Construct a new PieChartEncoder.

    Args:
      is3d: If True, draw a 3d pie chart. Default is False. If the pie chart
        includes multiple pies, is3d must be set to False.
      angle: Angle of rotation of the pie chart, in radians.
    """
    super(PieChartEncoder, self).__init__(chart)
    self.is3d = is3d
    self.angle = None
Construct a new PieChartEncoder.

    Args:
      is3d: If True, draw a 3d pie chart. Default is False. If the pie chart
        includes multiple pies, is3d must be set to False.
      angle: Angle of rotation of the pie chart, in radians.
    
mapreduce/lib/graphy/backends/google_chart_api/encoders.py