Explain this double speak(>: [pair for pair in values if key == pair[0]]
I understand the 'for pair in values'. I assume the first 'pair' creates the namespace (although I am not sure how Python knows it's a tuple yet). I think the outer [] make the line a comprehension ( If so, I don't seem to get how/why a comprehension works), and probably make the line either a tuple or list. The comprehension seems to act as a subroutine or macro( yes I know those two words are meaningless in Python). I definitely am missing the full meaning of the if statement. The example comes courtesy of Alan. Thanks, Clayton
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