用Python编写TTL装饰器

import time
from functools import wraps

def ttl_cache(ttl):
    cache = {}

    def decorator(func):
        @wraps(func)
        def wrapper(*args, **kwargs):
            key = (args, tuple(kwargs.items()))
            if key in cache and time.time() - cache[key][0] < ttl:
                return cache[key][1]
            result = func(*args, **kwargs)
            cache[key] = (time.time(), result)
            return result
        return wrapper
    return decorator

@ttl_cache(ttl=5)
def example_function(arg1, arg2):
    # 这里是需要缓存的函数
    pass