TN: fix callable j for classical spin system builders

jcmgray · Feb 5, 2025 · fd76818 · fd76818
1 parent a24d4f2
commit fd76818
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/quimb/tensor/tensor_builder.py b/quimb/tensor/tensor_builder.py
@@ -2118,7 +2118,7 @@ def parse_j_coupling_to_function(j):
     function.
     """
     if callable(j):
-        return j
+        return functools.cache(j)
 
     elif isinstance(j, dict):