Dynamically sized lru_cached function

dynamic_lru_cache.py

import functools

class Foo:
    @functools.lru_cache
    def get(self, z):
        return z

    def set_cache_size(self, s):
        Foo.get = functools.lru_cache(maxsize=s)(Foo.get.__wrapped__)


f = Foo()
f.get('a')
print(f.get.cache_info())
f.set_cache_size(s=10)
print(f.get.cache_info())