make `name in zone` consistent with `zone[name]`

specifically, allow name to be a str, and raise a KeyError if name
cannot be converted into a dns.name.Name

1 files changed, 3 insertions, 2 deletions

diff --git a/dns/zone.py b/dns/zone.py
index c9c1c20..ac95763 100644
--- a/dns/zone.py
+++ b/dns/zone.py
@@ -162,8 +162,9 @@ class Zone(dns.transaction.TransactionManager):
         key = self._validate_name(key)
         return self.nodes.get(key)
 
-    def __contains__(self, other):
-        return other in self.nodes
+    def __contains__(self, key):
+        key = self._validate_name(key)
+        return key in self.nodes
 
     def find_node(self, name, create=False):
         """Find a node in the zone, possibly creating it.