Fix crash when a ZoneInfo subclass is missing a _weak_cache

StanFromIreland · StanFromIreland · commit 78215735050d · 2026-03-17T20:43:57.000Z
diff --git a/Lib/test/test_zoneinfo/test_zoneinfo.py b/Lib/test/test_zoneinfo/test_zoneinfo.py
@@ -1595,7 +1595,7 @@ class ZI(self.klass):
             "Unexpected instance of int in ZI weak cache for key 'America/Los_Angeles'"
         )
 
-    def test_deleted_weak_cache(self): #works
+    def test_deleted_weak_cache(self):
         class ZI(self.klass):
             pass
         delattr(ZI, '_weak_cache')

Original file line number	Diff line number	Diff line change
`@@ -1595,7 +1595,7 @@ class ZI(self.klass):`
`1595`	`1595`	`"Unexpected instance of int in ZI weak cache for key 'America/Los_Angeles'"`
`1596`	`1596`	`)`
`1597`	`1597`
`1598`		`- def test_deleted_weak_cache(self): #works`
	`1598`	`+ def test_deleted_weak_cache(self):`
`1599`	`1599`	`class ZI(self.klass):`
`1600`	`1600`	`pass`
`1601`	`1601`	`delattr(ZI, '_weak_cache')`