code: def angle_normalize(x):
      return ((x + np.pi) % (2 * np.pi)) - np.pi
  
file_path: gym/gym/envs/classic_control/pendulum.py
imports: from os import path
  from typing import Optional
  import numpy
  import gym
  from gym import spaces
  from gym.envs.classic_control import utils
  from gym.error import DependencyNotInstalled
label_desc: Use image node_id 1 for calling a global function with example usage: angle_normalize(x) and returns: unknown