code: def __init__(self):
      lag = (self.p.period - 1) // 2
      data = 2 * self.data - self.data(-lag)
      self.lines.zlema = self.p._movav(data, period=self.p.period)
  
      super(ZeroLagExponentialMovingAverage, self).__init__()
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  from .None import Indicator, MovingAverageBase, MovAv
label_desc: Use image node_id 1 to create a new ZeroLagExponentialMovingAverage object from inherited base classes: MovingAverageBase with example: obj = ZeroLagExponentialMovingAverage()