OpenAI CartPole w/ Keras: Prediction

predict.py

"""
__name__   = predict.py
__author__ = Yash Patel
__description__ = Does the prediction using the defined model and data
"""

import gym
import numpy as np

from data import gather_data
from model import create_model

def predict():
	env = gym.make("CartPole-v0")
	trainingX, trainingY = gather_data(env)
	model = create_model()
	model.fit(trainingX, trainingY, epochs=5)
	
	scores = []
	num_trials = 50
	sim_steps = 500

	for trial in range(num_trials):
		observation = env.reset()
		score = 0
		for step in range(sim_steps):
			action = np.argmax(model.predict(observation.reshape(1,4)))
			observation, reward, done, _ = env.step(action)
			score += reward
			if done:
				break
		scores.append(score)

	print(np.mean(scores))

if __name__ == "__main__":
	predict()