Initial release. Hello world :).

examples/agents/random_agent.py

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+import logging
+import os
+
+import gym
+
+# The world's simplest agent!
+class RandomAgent(object):
+    def __init__(self, action_space):
+        self.action_space = action_space
+
+    def act(self, observation, reward, done):
+        return self.action_space.sample()
+
+if __name__ == '__main__':
+    # You can optionally set up the logger. Also fine to set the level
+    # to logging.DEBUG or logging.WARN if you want to change the
+    # amount of outut.
+    logger = logging.getLogger()
+    logger.setLevel(logging.INFO)
+
+    env = gym.make('CartPole-v0')
+    agent = RandomAgent(env.action_space)
+
+    # You provide the directory to write to (can be an existing
+    # directory, but can't contain previous monitor results. You can
+    # also dump to a tempdir if you'd like: tempfile.mkdtemp().
+    outdir = '/tmp/random-agent-results'
+    env.monitor.start(outdir, force=True)
+
+    episode_count = 200
+    max_steps = 100
+    reward = 0
+    done = False
+
+    for i in xrange(episode_count):
+        ob = env.reset()
+
+        for j in xrange(max_steps):
+            action = agent.act(ob, reward, done)
+            ob, reward, done, _ = env.step(action)
+            if done:
+                break
+
+    # Dump result info to disk
+    env.monitor.close()
+
+    # Upload to the scoreboard. We could also do this from another
+    # process if we wanted.
+    logger.info("Successfully ran RandomAgent. Now trying to upload results to the scoreboard. If it breaks, you can always just try re-uploading the same results.")
+    gym.upload(outdir, algorithm_id='random')