diff --git a/lib/matplotlib/cbook/__init__.py b/lib/matplotlib/cbook/__init__.py
index 340eb8db7ed9..f9d803a37388 100644
--- a/lib/matplotlib/cbook/__init__.py
+++ b/lib/matplotlib/cbook/__init__.py
@@ -11,6 +11,7 @@
import contextlib
import functools
import gzip
+import inspect
import itertools
import math
import operator
@@ -1961,6 +1962,10 @@ def _array_patch_perimeters(x, rstride, cstride):
def _setattr_cm(obj, **kwargs):
"""
Temporarily set some attributes; restore original state at context exit.
+
+ .. warning ::
+
+ This is not threadsafe.
"""
sentinel = object()
origs = {}
@@ -1978,14 +1983,18 @@ def _setattr_cm(obj, **kwargs):
# we want to set the original value back.
if isinstance(cls_orig, property):
origs[attr] = orig
+
+ # detect when we have Python Descriptors that supports
+ # setting so we will need to restore it
+ #
+ # https://docs.python.org/3/howto/descriptor.html
+ if hasattr(inspect.getattr_static(type(obj), attr), '__set__'):
+ origs[attr] = orig
+
# otherwise this is _something_ we are going to shadow at
# the instance dict level from higher up in the MRO. We
# are going to assume we can delattr(obj, attr) to clean
- # up after ourselves. It is possible that this code will
- # fail if used with a non-property custom descriptor which
- # implements __set__ (and __delete__ does not act like a
- # stack). However, this is an internal tool and we do not
- # currently have any custom descriptors.
+ # up after ourselves.
else:
origs[attr] = sentinel
pFad - Phonifier reborn
Pfad - The Proxy pFad of © 2024 Garber Painting. All rights reserved.
Note: This service is not intended for secure transactions such as banking, social media, email, or purchasing. Use at your own risk. We assume no liability whatsoever for broken pages.
Alternative Proxies:
Alternative Proxy
pFad Proxy
pFad v3 Proxy
pFad v4 Proxy