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I thought it seemed odd that Python supported the AND operator on lists, but it doesn't. You do need to convert to a set first, e.g. [1,2,3] & [1,2] gives

by joshvm 11y ago

I thought it seemed odd that Python supported the AND operator on lists, but it doesn't. You do need to convert to a set first, e.g. [1,2,3] & [1,2] gives a TypeError, while set([1,2,3]) & set([1,2]) gives set([1,2]) as expected.

zenogais 11y ago
You can also write sets in a more compact notation in python as: {1,2,3} & {1,2} Which gives {1,2} as a result.
akras14 11y ago
Thank you for catching this! I did in fact call set on the comments outside of that function. I've updated the blog post.