fix another indexing keys() issue.

diff --git a/dns/resolver.py b/dns/resolver.py
index 2b63792a6fbd8f9733d47b921abc0918b15f2e8c..e00a7ca4515a8b2983b8ac2867a411c1f158b039 100644 (file)
--- a/dns/resolver.py
+++ b/dns/resolver.py
@@ -1013,7 +1013,7 @@ class Resolver(object):
         @type algorithm: string"""
         self.keyring = keyring
         if keyname is None:
-            self.keyname = self.keyring.keys()[0]
+            self.keyname = list(self.keyring.keys())[0]
         else:
             self.keyname = keyname
         self.keyalgorithm = algorithm