How do I get the info for a cached property?

[arnavb]

Say I have the following class with a property that has an expensive operation:

from functools import lru_cache class Example: @property @lru_cache(maxsize=None) def a_getter(self): print('Doing an expensive operation!') expensive_result = 5 return expensive_result test = Example() for i in range(0, 1000): a_variable = test.a_getter print(test.a_getter.cache_info())

As evident, this does not run with 3.6.1, with the traceback:

Error:
Traceback (most recent call last): File "python", line 16, in <module> AttributeError: 'int' object has no attribute 'cache_info'

However, if I remove the property decorator, then the code works (I just have to switch to a function call for the getter).

Is there a way for me to get this cache info with the property decorator as well?

[buran]

Maybe not the best, but

from functools import lru_cache class Example: @property def a_getter(self): return self._a_getter() @lru_cache(maxsize=None) def _a_getter(self): print('Doing an expensive operation!') expensive_result = 5 return expensive_result test = Example() for i in range(0, 1000): a_variable = test.a_getter print(test._a_getter.cache_info())

would be interesting to see other suggestions

[Gribouillis]

Use

print(Example.a_getter.fget.cache_info())

[arnavb]

Thanks guys! Both of your solutions worked, but @Gribouillis's solution fits my needs better.

(Also unrelated question, but does this site have a method of marking threads solved or anything, by any chance?)