Python OrderedDict - LRU

from time import time

class TimeBoundedLRU:
    "LRU Cache that invalidates and refreshes old entries."

    def __init__(self, func, maxsize=128, maxage=30):
        self.cache = OrderedDict()      # { args : (timestamp, result)}
        self.func = func
        self.maxsize = maxsize
        self.maxage = maxage

    def __call__(self, *args):
        if args in self.cache:
            self.cache.move_to_end(args)
            timestamp, result = self.cache[args]
            if time() - timestamp <= self.maxage:
                return result
        result = self.func(*args)
        self.cache[args] = time(), result
        if len(self.cache) > self.maxsize:
            self.cache.popitem(0)
        return result

Source: docs.python.org

Similar codes

-1 vote228 views1 answer
How to bubble sort a 2d array in python
Python
1 vote246 views1 answer
Typage in python
Python
0 vote230 views1 answer
Find charechtar index in string python
Python
-7 votes241 views4 answers
Bitcoin with python
Python
0 vote232 views1 answer
Twin axis python
Python
0 vote241 views1 answer
Quill get content flask
Python
0 vote245 views1 answer
Python add comma each 3 digits format
Python
0 vote261 views1 answer
How to log errors while debug is false in django
Python Django
0 vote240 views1 answer
Keras transfer learning
Python
1 vote241 views1 answer
How to say something python
Python