Functions and Exceptions

4.1 Functions Functions Define and Call a Function Functions and Variables Two Different X's Extended Greeting Check Your Understanding Exercise: Weather
4.2 Functions and Parameters Functions and Parameters Print a Number Multiple Parameters Default Values Name and Age Check Your Understanding Exercise: Print Message
4.3 Namespaces in Functions Namespaces in Functions Two Different Y's Functions and Variables Check Your Understanding Exercise: Add, Subtract, or Multiply
4.4 Functions and Return Values Functions and Return Values Step Through Functions Calling Functions Check Your Understanding Exercise: Distance Converter
4.5 Exceptions Exceptions Try and Except Enter a Number Check Your Understanding Exercise: Enter a Negative Number