New submission from Wouter De Borger :
# Problem
the functools.lru_cache decorator locks all arguments to the function in memory
(inclusing self), causing hard to find memory leaks.
# Expected
I had assumed that the lru_cache would keep weak-references and that when an
object is garbage colected, all its cache entries expire as unreachable. This
is not the case.
# Solutions
1. I think it is worth at least mentioning this behavior in de documentation.
2. I also think it would be good if the LRU cache actually uses weak
references.
I will try to make a PR for this.
--
components: Library (Lib)
messages: 395075
nosy: Wouter De Borger2
priority: normal
severity: normal
status: open
title: lru_cache memory leak
versions: Python 3.10, Python 3.11, Python 3.6, Python 3.7, Python 3.8, Python
3.9
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<https://bugs.python.org/issue44310>
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