code: def __init__(self, epsilon=1e-4, shape=()):
      self.mean = np.zeros(shape, "float64")
      self.var = np.ones(shape, "float64")
      self.count = epsilon
  
file_path: baselines/baselines/common/running_mean_std.py
imports: import tensorflow
  import numpy
  from baselines.common.tf_util import get_session
label_desc: Use image node_id 1 to create a new RunningMeanStd object from inherited base classes: object with example: obj = RunningMeanStd(epsilon, shape)