Setting up a Mountain Car environment

One of the most common Gym environments is Mountain Car, where the goal is to drive an underpowered car up a steep hill. The car's engine isn't strong enough to climb the hill in a single pass, so the car needs to build up momentum by driving back and forth. Your task is to create and set up this environment.

This exercise is part of the course

Reinforcement Learning with Gymnasium in Python

Exercise instructions

Import the gymnasium library as gym.
Create a Mountain Car environment using the Gym library setting the environment ID as MountainCar and the render_mode as 'rgb_array'.
Reset the environment using a seed of 42 and get the initial_state which contains two values: the position and velocity of the car.

Hands-on interactive exercise

Have a go at this exercise by completing this sample code.

# Import the gymnasium library
____

# Create the environment
env = ____

# Get the initial state
initial_state, info = ____

position = initial_state[0]
velocity = initial_state[1]

print(f"The position of the car along the x-axis is {position} (m)")
print(f"The velocity of the car is {velocity} (m/s)")

Edit and Run Code

This exercise is part of the course

Reinforcement Learning with Gymnasium in Python

AdvancedSkill Level

4.8+

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Dive into the exciting world of Reinforcement Learning (RL) by exploring its foundational concepts, roles, and applications. Navigate through the RL framework, uncovering the agent-environment interaction. You'll also learn how to use the Gymnasium library to create environments, visualize states, and perform actions, thus gaining a practical foundation in RL concepts and applications.

Exercise 1: Fundamentals of reinforcement learning Exercise 2: What is Reinforcement Learning?Exercise 3: RL vs. other ML sub-domains Exercise 4: Scenarios for applying RL Exercise 5: Navigating the RL framework Exercise 6: RL interaction loop Exercise 7: Episodic and continuous RL tasks Exercise 8: Calculating discounted returns for agent strategies Exercise 9: Interacting with Gymnasium environments Exercise 10: Setting up a Mountain Car environment

Current Exercise

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Exercise 1: Expected SARSA Exercise 2: Expected SARSA update rule Exercise 3: Applying Expected SARSA Exercise 4: Double Q-learning Exercise 5: Implementing double Q-learning update rule Exercise 6: Applying double Q-learning Exercise 7: Balancing exploration and exploitation Exercise 8: Defining epsilon-greedy function Exercise 9: Solving CliffWalking with epsilon greedy strategy Exercise 10: Solving CliffWalking with decayed epsilon-greedy strategy Exercise 11: Multi-armed bandits Exercise 12: Creating a multi-armed bandit Exercise 13: Solving a multi-armed bandit Exercise 14: Assessing convergence in a multi-armed bandit Exercise 15: Congratulations!