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 vote55 views2 answers
Python del list
Python
0 vote101 views2 answers
Python create adictionary randomly assigning clors to categorical vairables
Python
0 vote104 views1 answer
Merge two arrays python with three one
Python
10 votes97 views3 answers
Discord table generator
Python
0 vote98 views1 answer
Pytest check exception
Python
0 vote105 views1 answer
Python - convert a list column into miltiple columns
Python
0 vote96 views1 answer
Minio python remove an object
Python
29 votes220 views1 answer
Slice dataframe dwpwnding on column value not emty
Python
0 vote103 views1 answer
Pivot table with lambda
Python
0 vote112 views1 answer
How to draw squircle python
Python