Like lru_cache but with a timeout instead

timed_cache.py

import functools
import time


def timed_cache(seconds, typed=False):
    def _decorator(user_function):
        cache = {}
        sentinel = object()

        @functools.wraps(user_function)
        def _wraps(*args, **kwargs):
            key = functools._make_key(args, kwargs, typed)
            result = cache.get(key, sentinel)
            if result is not sentinel:
                ts, result = result
                if time.time() < ts:
                    return result
            result = user_function(*args, **kwargs)
            cache[key] = (time.time() + seconds, result)
            return result
        return _wraps
    return _decorator


@timed_cache(5)
def foo():
    return time.time()

"""
>>> foo()
1483834036.2725716
>>> foo()
1483834036.2725716
>>> foo()
1483834036.2725716
>>> foo()
1483834036.2725716
>>> foo()
1483834036.2725716
>>> foo()
1483834041.4244115
"""