Bug report

The in-code documentation for the lru_cache function states:

Iftyped is True, arguments of different types will be cached separately.
For example, f(3.0) and f(3) will be treated as distinct calls with
distinct results.

Specifically for 3.0 and 3, even if typed is False, they are still treated as distinct calls, asint is fast-tracked.

The online documentation states correctly:

(Some types such as str and int may be cached separately even when typed is false.)

I know the docstrings are seldom used, but if they already exists, at least they should be accurate as IDEs sometimes show them. Simply changing the example tof(3.0) andf(Decimal("3.0")) should suffice.

Your environment

• CPython versions tested on: 3.13 (dev), applies to all supported CPython versions
• Operating system and architecture: Mac OS Ventura

Linked PRs

• gh-105172: Fixed functools.lru_cache typed argument docstring. #105173