Decorators

1def bold(func):
2    def wrapper(*args, **kwargs):
3        return f"<b>{func(*args, **kwargs)}</b>"
4    return wrapper
5
6@bold
7def greet(name):
8    return f"Hello, {name}"
9
10print(greet("Alice"))

1import time
2from functools import wraps
3
4def timer(func):
5    @wraps(func)
6    def wrapper(*args, **kwargs):
7        start = time.time()
8        result = func(*args, **kwargs)
9        elapsed = time.time() - start
10        print(f"{func.__name__} took {elapsed:.4f}s")
11        return result
12    return wrapper
13
14@timer
15def slow_function():
16    time.sleep(0.1)
17    return "Done"
18
19print(slow_function())