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 vote135 views1 answer
Python wifi moudel [WinError 2] The system cannot find the file specified
Python
0 vote127 views1 answer
Python does strftime work with date objects
Python
2 votes124 views1 answer
Discord.py check if user has role
Python
2 votes136 views4 answers
Count values in array python
Python
22 votes143 views4 answers
Access first element of dictionary python
Python
0 vote134 views3 answers
Py draw matrix of black square and white circle
Python
1 vote127 views1 answer
Continue reading lines until there is no more input python
Python
2 votes135 views1 answer
How to append element python
Python
0 vote148 views2 answers
Tsv to csv python
Python
0 vote153 views1 answer
Select inverse with conditions pandas
Python