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

0 vote138 views1 answer
Alpaca examples
Python
2 votes158 views1 answer
Edge detection opencv python
Python
1 vote148 views2 answers
Add column array python
Python
0 vote155 views1 answer
Say something in discord discord.py
Python
1 vote149 views1 answer
Pandas column rank
Python
1 vote150 views1 answer
Flask enumerate index
Python
0 vote163 views1 answer
Removing stop words in python
Python
1 vote168 views1 answer
Read a function of excel in python
Python
0 vote99 views1 answer
Snipe cmd python.py
Python
4 votes167 views2 answers
Declare array with given size python
Python