code: def stepPhysics(self, force):
      x, x_dot, theta, theta_dot = self.state
      costheta = math.cos(theta)
      sintheta = math.sin(theta)
      temp = (
          force
          + self.polemass_length * theta_dot * theta_dot * sintheta
      ) / self.total_mass
      thetaacc = (self.gravity * sintheta - costheta * temp) / (
          self.length
          * (
              4.0 / 3.0
              - self.masspole * costheta * costheta / self.total_mass
          )
      )
      xacc = (
          temp
          - self.polemass_length * thetaacc * costheta / self.total_mass
      )
      x = x + self.tau * x_dot
      x_dot = x_dot + self.tau * xacc
      theta = theta + self.tau * theta_dot
      theta_dot = theta_dot + self.tau * thetaacc
      return (x, x_dot, theta, theta_dot)
  
file_path: PARL/examples/tutorials/lesson5/ddpg/env.py
imports: import math
  import gym
  from gym import spaces, logger
  from gym.utils import seeding
  import numpy
label_desc: Use image node_id 3 for calling the ContinuousCartPoleEnv obj's underlying member method code with example usage: obj.stepPhysics(force) and returns: x,  x_dot,  theta,  theta_dot