Python in Education

18  |  Chapter 3: Why Python in Education?

---

        'exits': {

            'north': 'gatehouse',

        },

    },

}

# Set a default starting point.

place = 'cave'

# Start the game "loop" that will keep making new turns.

while True:

    # Get the current location from the world.

    location = world[place]

    # Print the location's description and exits.

    print(location['description'])

    print('Exits:')

    print(', '.join(location['exits'].keys()))

    # Get user input.

    direction = input('Where now? ').strip().lower()

    # Parse the user input...

    if direction == 'quit':

        print('Bye!')

        break  # Break out of the game loop and end.

    elif direction in location['exits']:

        # Set new place in world.

        place = location['exits'][direction]

    else:

        # That exit doesn't exist!

        print("I don't understand!")

A typical “game” (including user input) looks something like this:

$ python adventure.py

You are in a mysterious cave.

Exits:

up

Where now? up

You are in the castle courtyard.

Exits:

south, down

Where now? south

You are at the gates of a castle.

Exits:

south, north, up

Where now? hello

I don't understand!

You are at the gates of a castle.

Exits:

south, north, up

Where now? quit

Bye!