Test Yourself

• Why are functions advantageous to have in your programs?

• When does the code in a function execute: when the function is defined or when the function is called?

• What statement creates a function?

• What is the difference between a function and a function call?

• How many global scopes are there in a Python program? How many local scopes?

• What happens to variables in a local scope when the function call returns?

• What is a return value? Can a return value be part of an expression?

• If a function does not have a return statement, what is the return value of a call to that function?

• How can you force a variable in a function to refer to the global variable?

• What is the data type of None?

• What does the import areallyourpetsnamederic statement do?

• If you had a function named bacon() in a module named spam, how would you call it after importing spam?

• How can you prevent a program from crashing when it gets an error?

• What goes in the try clause? What goes in the except clause?