1. Problem Solving

2. Houston, we have a problem

3. Problem: Get home Given: Oxygen scrubbers don’t fit
Goal: Make them fit!
Resources:
Duct Tape!
Expertise
Constraints
Time
Vast emptiness of space
Ownership
Team of engineers at mission control

4. Problem solving strategies
Get the Astronauts Home
Fix Oxygen Problem
Get back to Earth
Get home
Stop Oxygen Leak
Fix up temporary engine
Dump other modules
Adapt CO2 Scrubbers
Turn Spaceship Around
Re-enter atmosphere
Get back to Earth Orbit
“Top Down”

5. Problem solving strategies
Get the Astronauts Home
Stop Oxygen Leak
Fix up temporary engine
Turn Spaceship Around
Get back to Earth Orbit
Adapt CO2 Scrubbers
Dump other modules
Re-enter atmosphere
“Stepwise refinement”

6. Input
This will work:
result = input(“What should I do?:”)
print “You told me to “,result
But only if the input is a number, otherwise it gives an error.
Why?
How to fix it?

7. A basic menu
def ShowMenu(): print “”” Please choose an option: 1 – Square 2 – Hexagon 3 – Octagon 4 – Quit “”” def GetResponse(): response = input(“Enter Option Number:”) return response