code: def adjust_prior(self,index,prior):
          
  
          if isinstance(index, list):
              for item in index:
                  if item < 0 or item > (len(self.z_list)-1) or not isinstance(item, int):
                      raise ValueError("Oops - the latent variable index " + str(item) + " you have entered is invalid!")
                  else:
                      self.z_list[item].prior = prior 
                      if hasattr(self.z_list[item].prior, 'mu0'):
                          self.z_list[item].start = self.z_list[item].prior.mu0    
                      elif hasattr(self.z_list[item].prior, 'loc0'):
                          self.z_list[item].start = self.z_list[item].prior.loc0
          else:
              if index < 0 or index > (len(self.z_list)-1) or not isinstance(index, int):
                  raise ValueError("Oops - the latent variable index " + str(index) + " you have entered is invalid!")
              else:
                  self.z_list[index].prior = prior
                  if hasattr(self.z_list[index].prior, 'mu0'):
                      self.z_list[index].start = self.z_list[index].prior.mu0  
                  elif hasattr(self.z_list[index].prior, 'loc0'):
                      self.z_list[index].start = self.z_list[index].prior.loc0
docs: Adjusts priors for the latent variables
  
          Parameters
          ----------
          index : int or list[int]
              Which latent variable index/indices to be altered
  
          prior : Prior object
              Which prior distribution? E.g. Normal(0,1)
  
          Returns
          ----------
          None (changes priors in Parameters object)