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-rw-r--r--cherrypy/process/plugins.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/cherrypy/process/plugins.py b/cherrypy/process/plugins.py
index 4d7dcbfd..c787ba92 100644
--- a/cherrypy/process/plugins.py
+++ b/cherrypy/process/plugins.py
@@ -610,7 +610,7 @@ class Autoreloader(Monitor):
def sysfiles(self):
"""Return a Set of sys.modules filenames to monitor."""
files = set()
- for k, m in sys.modules.items():
+ for k, m in list(sys.modules.items()):
if re.match(self.match, k):
if (
hasattr(m, '__loader__') and