[Python] Using lru_cache on a class that has a classmethod

I want to cache instances of a class because the constructor is complicated and repeated uses won't alter the contents. This works great. However, I want to create a classmethod to clear the cache. In the real code, clear will also clear file cache in addition to memory cache.

The following is an MWE that works, except for calling the clear

from functools import lru_cache

@lru_cache(maxsize=None)
class MyClass:
def __init__(self, x):
print(f"Initializing with {x}")
self.x = x

@classmethod
def clear(cls):
print('clearing cache')
cls.cache_clear()

a = MyClass(1)
b = MyClass(1)
print(a is b)
try: MyClass.clear()
except Exception as e: print(e) # <-- 'classmethod' object is not callable
# MyClass.cache_clear() does work however
c = MyClass(1)

Continue reading...