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from functools import lru_cache, partial, reduce, wraps @lru_cache(maxsize=256) def fibonacci(n: int) -> int: if n < 2: return n return fibonacci(n-1) + fibonacci(n-2) double = partial(lambda x, n: x * n, n=2) total = reduce(lambda a, b: a + b, [1, 2, 3, 4, 5]) # 15 def decorator(fn): @wraps(fn) # preserves __name__, __doc__ def wrapper(*args, **kw): return fn(*args, **kw) return wrapper
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