Python Method Caching with specified time

time_cache.py

import time


def time_cache(ttl: int):
    def decorator(func):
        ttls = {}
        return_cache = {}

        def wrapper(*args, **kwargs):
            key = (*args,) + tuple([(k, v) for k, v in kwargs.items()])
            
            if key not in ttls:
                ttls[key] = time.time() - ttl - ttl
            
            if time.time() > ttls[key] + ttl:
                result = func(*args, **kwargs)
                return_cache[key] = result
                ttls[key] = time.time()
                return result
            else:
                return return_cache[key]

        return wrapper
    return decorator