Have a problem after typing in the source code from the book, but can't understand the error message? Use this online diff tool to see the differences between the book's code and your code!
Select the program you were typing in from this dropdown menu:
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Copyright © 2008, 2009, 2010 by Albert Sweigart
"Invent Your Own Computer Games with Python" 2nd Edition is free to copy and distribute under the Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License.