code: def _get_obs(self):
      data = self.sim.data
      return np.concatenate(
          [
              data.qpos.flat[2:],
              data.qvel.flat,
              data.cinert.flat,
              data.cvel.flat,
              data.qfrc_actuator.flat,
              data.cfrc_ext.flat,
          ]
      )
  
file_path: gym/gym/envs/mujoco/humanoid.py
imports: import numpy
  from gym import utils
  from gym.envs.mujoco import MuJocoPyEnv
  from gym.spaces import Box
label_desc: Use image node_id 2 for calling the HumanoidEnv obj's underlying member method code with example usage: obj._get_obs() and returns: np