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  1. words = ['apples', 'bananas', 'tofu', 'cats']
  2. def spam(words):
  3. if words:
  4. return ", ".join(words[:-1]) + ", and " + words[-1]
  5. print spam(words)
Success #stdin #stdout 0s 23352KB
stdin
Standard input is empty
stdout
apples, bananas, tofu, and cats