Fixed str concat

ur-whitelab · Nov 22, 2024 · 217585e · 217585e
1 parent 40f5089
commit 217585e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/exmol/exmol.py b/exmol/exmol.py
@@ -395,7 +395,7 @@ def _check_alphabet_consistency(
     if check and not smiles_symbols.issubset(alphabet_symbols):
         # show which symbols are not in alphabet
         raise ValueError(
-            "symbols not in alphabet" + smiles_symbols.difference(alphabet_symbols)
+            "symbols not in alphabet" + str(smiles_symbols.difference(alphabet_symbols))
         )
     return smiles_symbols.issubset(alphabet_symbols)