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gh-152753: Fix memory leak in ipaddress properties by switching to cached_property #152790

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gh-152753: Fix memory leak in ipaddress properties by switching to cached_property #152790

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6e5055e
gh-152753: Fix memory leak in ipaddress properties by switching to ca…
bastitva0-blip Jul 1, 2026
a1fd3d8
Fix trailing newline at end of file
bastitva0-blip Jul 1, 2026
4548c14
📜🤖 Added by blurb_it.
blurb-it[bot] Jul 1, 2026
04180a8
Merge branch 'main' into fix/ipaddress-lru-cache-memleak
bastitva0-blip Jul 1, 2026
308b1d7
Merge branch 'main' into fix/ipaddress-lru-cache-memleak
bastitva0-blip Jul 1, 2026
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16 changes: 6 additions & 10 deletions Lib/ipaddress.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1264,7 +1264,7 @@ class IPv4Address(_BaseV4, _BaseAddress):

"""Represent and manipulate single IPv4 Addresses."""

__slots__ = ('_ip', '__weakref__')
__slots__ = ('_ip', '__weakref__', '__dict__')

def __init__(self, address):

Expand Down Expand Up @@ -1317,8 +1317,7 @@ def is_reserved(self):
"""
return self in self._constants._reserved_network

@property
@functools.lru_cache()
@functools.cached_property
def is_private(self):
"""``True`` if the address is defined as not globally reachable by
iana-ipv4-special-registry_ (for IPv4) or iana-ipv6-special-registry_
Expand All @@ -1339,8 +1338,7 @@ def is_private(self):
and all(self not in net for net in self._constants._private_networks_exceptions)
)

@property
@functools.lru_cache()
@functools.cached_property
def is_global(self):
"""``True`` if the address is defined as globally reachable by
iana-ipv4-special-registry_ (for IPv4) or iana-ipv6-special-registry_
Expand Down Expand Up @@ -1548,8 +1546,7 @@ def __init__(self, address, strict=True):
elif self._prefixlen == (self.max_prefixlen):
self.hosts = lambda: iter((IPv4Address(addr),))

@property
@functools.lru_cache()
@functools.cached_property
def is_global(self):
"""Test if this address is allocated for public networks.

Expand Down Expand Up @@ -1912,7 +1909,7 @@ class IPv6Address(_BaseV6, _BaseAddress):

"""Represent and manipulate single IPv6 Addresses."""

__slots__ = ('_ip', '_scope_id', '__weakref__')
__slots__ = ('_ip', '_scope_id', '__weakref__', '__dict__')

def __init__(self, address):
"""Instantiate a new IPv6 address object.
Expand Down Expand Up @@ -2085,8 +2082,7 @@ def is_site_local(self):
"""
return self in self._constants._sitelocal_network

@property
@functools.lru_cache()
@functools.cached_property
def is_private(self):
"""``True`` if the address is defined as not globally reachable by
iana-ipv4-special-registry_ (for IPv4) or iana-ipv6-special-registry_
Expand Down
1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2026-07-01-14-52-54.gh-issue-152753.IFTAg1.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
blurb new "Fix memory leak in ipaddress properties by switching from functools.lru_cache to functools.cached_property."
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