Issue #23209, #23225: selectors.BaseSelector.close() now clears its internal
reference to the selector mapping to break a reference cycle. Initial patch
written by Martin Richard.
diff --git a/Lib/selectors.py b/Lib/selectors.py
index e4ad4cb..beb7ef7 100644
--- a/Lib/selectors.py
+++ b/Lib/selectors.py
@@ -175,6 +175,8 @@
"""
mapping = self.get_map()
try:
+ if mapping is None:
+ raise KeyError
return mapping[fileobj]
except KeyError:
raise KeyError("{!r} is not registered".format(fileobj)) from None
@@ -256,6 +258,7 @@
def close(self):
self._fd_to_key.clear()
+ self._map = None
def get_map(self):
return self._map