add gym examples

examples/pybullet/gym/cartpole_bullet_gym_example.py

@@ -0,0 +1,31 @@
+"""One-line documentation for gym_example module.
+
+A detailed description of gym_example.
+"""
+
+import gym
+from envs.bullet.cartpole_bullet import CartPoleBulletEnv
+import setuptools
+import time
+import numpy as np
+
+
+w = [0.3, 0.02, 0.02, 0.012]
+
+def main():
+  env = gym.make('CartPoleBulletEnv-v0')
+  for i_episode in range(1):
+    observation = env.reset()
+    done = False
+    t = 0
+    while not done:
+        print(observation)
+        action = np.array([np.inner(observation, w)])
+        print(action)
+        observation, reward, done, info = env.step(action)
+        t = t + 1
+        if done:
+            print("Episode finished after {} timesteps".format(t+1))
+            break
+
+main()