Lec 15: Functions as values, lambda

Reminders

Quiz 5 is due today

Work on Project 2, due Oct 9

Functions are values in Python, just like float, int, etc.
Functions can be assigned to variables, used as parameters, stored in lists, used as keys or values
Dictionary mapping string to function can be used for handlers
sys.exit() exits program immediately
lambda vars: retval defines an anonymous function
Don't use lambda for complicated functions
Assigning to a return value is a good way to handle functions that need to change vars outside of their scope