code: def set_bandwidth(self, bandwidth):
      self.bw = bandwidth
      self.weights = self._compute_weights()
  
imports: import numpy
  import scipy.optimize
  import ConfigSpace
  from scipy.special import erf
  from pdb import set_trace
label_desc: Use image node_id 2 for calling the BaseKernel obj's underlying member method code with example usage: obj.set_bandwidth(bandwidth) without return types