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-rw-r--r--indra/lib/python/indra/ipc/llmessage.py6
1 files changed, 2 insertions, 4 deletions
diff --git a/indra/lib/python/indra/ipc/llmessage.py b/indra/lib/python/indra/ipc/llmessage.py
index 6161badc70..91fb36b72c 100644
--- a/indra/lib/python/indra/ipc/llmessage.py
+++ b/indra/lib/python/indra/ipc/llmessage.py
@@ -26,8 +26,6 @@ THE SOFTWARE.
$/LicenseInfo$
"""
-from sets import Set, ImmutableSet
-
from compatibility import Incompatible, Older, Newer, Same
from tokenstream import TokenStream
@@ -44,8 +42,8 @@ class Template:
def compatibleWithBase(self, base):
messagenames = (
- ImmutableSet(self.messages.keys())
- | ImmutableSet(base.messages.keys())
+ frozenset(self.messages.keys())
+ | frozenset(base.messages.keys())
)
compatibility = Same()