! findspam.py: purge_cache(): avoid KeyError

Charcoal-SE · Nov 23, 2018 · ff5b03f · ff5b03f
1 parent 3380c7a
commit ff5b03f
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/findspam.py b/findspam.py
@@ -554,7 +554,9 @@ def purge_cache(cachevar, limit):
     log('debug', 'purge_cache({0}): oldest remaining entry is {1}'.format(
         limit, now - cachevar[remaining]['timestamp']))
     for old in oldest:
-        del cachevar[old]
+        # Guard against KeyError; race condition?
+        if old in cachevar:
+            del cachevar[old]
 
 
 def dns_query(label, qtype):