class_docstr: Tracks the mean, variance and count of values.
class_docstr_tok: ["Tracks","the","mean",",","variance","and","count","of","values","."]
docstr: Updates from batch mean, variance and count moments.
docstr_tok: ["Updates","from","batch","mean",",","variance","and","count","moments","."]
code: def update_from_moments(self, batch_mean, batch_var, batch_count):
      """Updates from batch mean, variance and count moments."""
      (
          self.mean,
          self.var,
          self.count,
      ) = update_mean_var_count_from_moments(
          self.mean,
          self.var,
          self.count,
          batch_mean,
          batch_var,
          batch_count,
      )
  
file_path: gym/gym/wrappers/normalize.py
imports: import numpy
  import gym
label_desc: Use image node_id 3 for calling the RunningMeanStd obj's underlying member method code with example usage: obj.update_from_moments(batch_mean, batch_var, batch_count) without return types