Automate the boring stuff with Python: Comma Code

Question

Currently working my way through this beginners book and have completed one of the practice projects \'Comma Code\' which asks the user to construct a program which:

Answer 1

Here's my solution. Once I found the join method and how it worked, the rest followed.

spam = ['apples', 'bananas', 'tofu', 'cats']

def commas(h):
    s = ', '
    print(s.join(spam[0:len(spam)-1]) + s + 'and ' + spam[len(spam)-1])

commas(spam)