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def debug(func): @wraps(func) # preserves , doc , etc. def wrapper(*args, **kwargs): print(f"{func. name }: args={args}, kwargs={kwargs}") return func(*args, **kwargs) return wrapper def wrapper(*args, **kwargs): print(f"{func

def add(a, b): return a + b

def retry(max_attempts=3, delay=1, backoff=2): def decorator(func): @wraps(func) def wrapper(*args, **kwargs): attempts = 0 current_delay = delay while attempts < max_attempts: try: return func(*args, **kwargs) except Exception as e: attempts += 1 if attempts == max_attempts: raise print(f"Attempt {attempts} failed: {e}. Retrying in {current_delay}s") time.sleep(current_delay) current_delay *= backoff return wrapper return decorator doc ) # Raise base to exponent 6

@repeat(times=3) def say_hi(): print("Hi!") **kwargs): print(f"{func. name }: args={args}

say_hi() class CountCalls: def init (self, func): self.func = func self.calls = 0 self._wrapped = func # optional for wraps-like behavior

print(power.) # power (not wrapper) print(power. doc ) # Raise base to exponent 6. Decorators with arguments (nested factory) def repeat(times): def decorator(func): @wraps(func) def wrapper(*args, **kwargs): for _ in range(times): result = func(*args, **kwargs) return result return wrapper return decorator