code: def __div__(self, other):
      return self.__rmul__(1 / float(other))
  
imports: import numpy
  import scipy.stats
  from nipy.algorithms.statistics.utils import z_score
  from ..utils import mahalanobis
  from .None import kalman
label_desc: Use image node_id 8 for calling the contrast obj's underlying member method code with example usage: obj.__div__(other) and returns: self