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It's something useful to compare words in a list.
Given the words:
1 aaa 2 bbb 3 ccc
Compare them as so:
1 aaa < bbb 2 bbb < ccc 3 ccc < ddd
1 words = 'aaa bbb ccc ddd'.split() 2 3 for first, second in zip(words, words[1:]): 4 print(first, '<', second)