In the first half of this book you mostly just printed out things and called
functions, but everything was basically in a straight line. Your scripts ran
starting at the top, and went to the bottom where they ended. If you
made a function you could run that function later, but it still didn't
have the kind of branching you need to really make decisions. Now that
you have if, else, and elif you can start to make scripts that
decide things.
In the last script you wrote out a simple set of tests asking some questions. In this script you will ask the user questions and make decisions based on their answers. Write this script, and then play with it quite a lot to figure it out.
.. literalinclude:: ex/ex31.py
:linenos:
A key point here is that you are now putting the if-statements inside
if-statements as code that can run. This is very powerful and can be used
to create "nested" decisions, where one branch leads to another and another.
Make sure you understand this concept of if-statements inside if-statements. In fact, do the extra credit to really nail it.
Here is me playing this little adventure game. I do not do so well.
.. literalinclude:: ex/ex31.txt
:language: console
Make new parts of the game and change what decisions people can make. Expand the game out as much as you can before it gets ridiculous.