fix(python): add the missing f prefix to the permutation split error (#4709)

python/python/lancedb/permutation.py

@@ -641,7 +641,7 @@ class Permutation:
         if split is not None:
             if permutation_table is None:
                 raise ValueError(
-                    "Cannot create a permutation on split `{split}`"
+                    f"Cannot create a permutation on split `{split}`"
                     " because no permutation table is provided"
                 )
             if isinstance(split, str):

python/python/tests/test_permutation.py

@@ -1404,3 +1404,10 @@ def test_permutation_over_remote_table():
         ]
 
     assert_server_safe_row_id_requests(server)
+
+
+def test_from_tables_split_without_permutation_table(mem_db):
+    tbl = mem_db.create_table("test_table", pa.table({"id": range(10)}))
+
+    with pytest.raises(ValueError, match="permutation on split `train` because no"):
+        Permutation.from_tables(tbl, split="train")