The examples below will increase in number of lines of code and difficulty: 1 line: Output print ('Hello, world!') 2 lines: Input, assignment name = input('What is your name?\n') print ('Hi, %s.' % name) 3 lines: For loop, built-in enumerate function, new style formatting friends = ['john', 'pat', 'gary', 'michael'] for i, name in enumerate(friends): print ("iteration {iteration} is {name}".format