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[3.11] gh-104112: link from cached_property docs to method-caching FAQ (GH-104113) #104182

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carljm merged 1 commit into from
May 4, 2023
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[3.11] gh-104112: link from cached_property docs to method-caching FAQ (GH-104113) #104182

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gh-104112: link from cached_property docs to method-caching FAQ (GH-1… 
…04113)

(cherry picked from commit fa86a77)

Co-authored-by: Carl Meyer <carl@oddbird.net>
Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
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@carljm @hauntsaninja @miss-islington
2 people authored and miss-islington committed May 4, 2023
commit 0271e1cef786a41d4bd4885dd2d90fbf75062d11
16 changes: 4 additions & 12 deletions Doc/library/functools.rst
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Expand Up @@ -102,18 +102,10 @@ The :mod:`functools` module defines the following functions:
``__slots__`` without including ``__dict__`` as one of the defined slots
(as such classes don't provide a ``__dict__`` attribute at all).

If a mutable mapping is not available or if space-efficient key sharing
is desired, an effect similar to :func:`cached_property` can be achieved
by a stacking :func:`property` on top of :func:`cache`::

class DataSet:
def __init__(self, sequence_of_numbers):
self._data = sequence_of_numbers

@property
@cache
def stdev(self):
return statistics.stdev(self._data)
If a mutable mapping is not available or if space-efficient key sharing is
desired, an effect similar to :func:`cached_property` can also be achieved by
stacking :func:`property` on top of :func:`lru_cache`. See
:ref:`faq-cache-method-calls` for more details on how this differs from :func:`cached_property`.

.. versionadded:: 3.8

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