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import time, functools def timer(func): @functools.wraps(func) def wrapper(*args, **kwargs): start = time.perf_counter() result = func(*args, **kwargs) end = time.perf_counter() print(f"{func.__name__} took {end - start:.4f}s") return result return wrapper @timer def slow(): time.sleep(0.1) slow() # slow took 0.1003s
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