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Description
The description says "using lower() to ensure consistent capitalization."
But the proposed solution is missing it:
def reference_exercise3(words: List[str]) -> List[Tuple[str, int]]:
return [(k, len(list(v))) for k, v in itertools.groupby(sorted(words, key=lambda x: x[0]), key=lambda x: x[0])]perhaps:
itertools.groupby(sorted(words, key=lambda x: x[0].lower()), key=lambda x: x[0].lower()):