code: def __init__(self, vmin=None, vmax=None, midpoint=None, clip=False):
      self.midpoint = midpoint
      super().__init__(vmin, vmax, clip)
  
imports: import matplotlib.pyplot
  import numpy
  import matplotlib.colors
label_desc: Use image node_id 1 to create a new MidpointNormalize object from inherited base classes: colors with example: obj = MidpointNormalize(vmin, vmax, midpoint, clip)