Lab 2 Functions

Worksheet solutions

Code solutions

Goals

• Understand print, return, and None
• Practice with functions and parameters
• Turtle functions

Lab Setup

• Use CyberDuck to SFTP into your account on the cs.wellesley.edu server
• On the server, navigate to the cs111/download folder
• Download the lab02 folder to your Desktop (drag and drop it from the CyberDuck window)
• Open Thonny and view the relevant lab02 files

Table of Contents

• Lab 2 Home
• Part 1: Print, return, and None
• Part 2: Parameters
• Extra turtle practice: Turtle graphics functions

Big Questions

• What is the difference between print and return?
  Show Answer

  Return makes a result value available to whoever called the function. Print creates a line of output for the program as a whole. Return ends the current function, but print doesn't.
• How do parameters get their values?
  Show Answer

  Parameters get their values when a function is called. The code that calls the function puts the values in the parentheses used for the function call.