How to Create a Text Adventure Using Python, Part 3: Moving Through the Game World

I continue my series about how to create a text adventure using Python.

Goals:
Overview of the program so far.
Show how to make sure the character doesn’t walk off the board.
Move the character from one zone to another and back again.
Allow a character to examine the tile it is on.

Code on GitHub:

Part 1:

Part 2: