Properly quote keyspace name in Session.set_keyspace()

CHANGELOG.rst

@@ -19,6 +19,8 @@ Bug Fixes
   called
 * Avoid race condition that could leave ResponseFuture callbacks uncalled
   if the callback was added outside of the event loop thread (github issue #95)
+* Properly escape keyspace name in Session.set_keyspace().  Previously, the
+  keyspace name was quoted, but any quotes in the string were not escaped.
 
 Other
 -----

cassandra/cluster.py

@@ -31,7 +31,7 @@ from cassandra.decoder import (QueryMessage, ResultMessage,
                                PreparedQueryNotFound,
                                IsBootstrappingErrorMessage, named_tuple_factory,
                                dict_factory)
-from cassandra.metadata import Metadata
+from cassandra.metadata import Metadata, protect_name
 from cassandra.policies import (RoundRobinPolicy, SimpleConvictionPolicy,
                                 ExponentialReconnectionPolicy, HostDistance,
                                 RetryPolicy)
@@ -1253,7 +1253,7 @@ class Session(object):
         Set the default keyspace for all queries made through this Session.
         This operation blocks until complete.
         """
-        self.execute('USE "%s"' % (keyspace,))
+        self.execute('USE %s' % (protect_name(keyspace),))
 
     def _set_keyspace_for_all_pools(self, keyspace, callback):
         """