Chromakey

1
Session 17

• Chromakey

2
Questions??

• Lab six
• PA03
• Because of the exam next Friday, PA04 will not be
  assigned until next week and will be due the week
  after the exam

3
Review from last time

• In an if statement you can join multiple
  conditions by using and, or, or not
  
• x
• ab or ac
• To negate something, use not
• not rq (which is the same as r!q

4
Review from last time

• If you want to take exactly one of several
  choices than you use elif
  
• if (age18)
• print You have been eligible to vote for a
  while
  
• elif (age18)
• print Hey, you can vote now
• else
• print One of these days, you can vote

5
ChromaKey

• You have all seen TV weather reports where they
  use ChromaKey to put a background behind the
  reporter
  

6
I want to do that!