blob: 63cee6cb411534f6187a266ae59eb529e5389cb8 (
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diff --git a/jaraco/collections.py b/jaraco/collections.py
index 3ab9dc9..6a6e342 100644
--- a/jaraco/collections.py
+++ b/jaraco/collections.py
@@ -4,6 +4,7 @@ import collections.abc
import itertools
import copy
import functools
+import platform
from jaraco.classes.properties import NonDataProperty
import jaraco.text
@@ -592,9 +593,14 @@ class DictStack(list, collections.abc.Mapping):
return list(set(itertools.chain.from_iterable(c.keys() for c in self)))
def __getitem__(self, key):
- for scope in reversed(self):
- if key in scope:
- return scope[key]
+ if 'PyPy' in platform.python_implementation():
+ for scope in reversed(list(self)):
+ if key in scope:
+ return scope[key]
+ else:
+ for scope in reversed(self):
+ if key in scope:
+ return scope[key]
raise KeyError(key)
push = list.append
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