Now that __keys are fully hidden, switch the underlying structure
to deque() which futher reduces the temptation to index or resort.
Also, it is a bit faster for some cases.
diff --git a/Lib/collections.py b/Lib/collections.py
index a1e8ed9..2b0de18 100644
--- a/Lib/collections.py
+++ b/Lib/collections.py
@@ -27,11 +27,11 @@
except AttributeError:
# Note the underlying data structure for this class is likely to
# change in the future. Do not rely on it or access it directly.
- self.__keys = []
+ self.__keys = deque()
self.update(*args, **kwds)
def clear(self):
- del self.__keys[:]
+ self.__keys.clear()
dict.clear(self)
def __setitem__(self, key, value):