diff --git a/hugr-py/src/hugr/tys.py b/hugr-py/src/hugr/tys.py
index a779212c8..fc5a44cb1 100644
--- a/hugr-py/src/hugr/tys.py
+++ b/hugr-py/src/hugr/tys.py
@@ -333,8 +333,7 @@ def __init__(self, ok: Iterable[Type], err: Iterable[Type]):
         self.variant_rows = [list(ok), list(err)]
 
     def __repr__(self) -> str:
-        ok = self.variant_rows[0]
-        err = self.variant_rows[1]
+        ok, err  = self.variant_rows
         ok_str = ok[0] if len(ok) == 1 else tuple(ok)
         err_str = err[0] if len(err) == 1 else tuple(err)
         return f"Result({ok_str}, {err_str})"
diff --git a/hugr-py/src/hugr/val.py b/hugr-py/src/hugr/val.py
index acc42e84c..1972ec614 100644
--- a/hugr-py/src/hugr/val.py
+++ b/hugr-py/src/hugr/val.py
@@ -224,7 +224,7 @@ def __init__(self, vals: Iterable[Value], err_typ: Iterable[tys.Type]):
 
     def __repr__(self) -> str:
         vals_str = self.vals[0] if len(self.vals) == 1 else tuple(self.vals)
-        err = self.typ.variant_rows[1]
+        _, err = self.typ.variant_rows
         err_str = err[0] if len(err) == 1 else tuple(err)
         return f"Ok({vals_str}, {err_str})"
 
@@ -253,7 +253,7 @@ def __init__(self, ok_typ: Iterable[tys.Type], vals: Iterable[Value]):
         )
 
     def __repr__(self) -> str:
-        ok = self.typ.variant_rows[1]
+        ok, _ = self.typ.variant_rows
         ok_str = ok[0] if len(ok) == 1 else tuple(ok)
         vals_str = self.vals[0] if len(self.vals) == 1 else tuple(self.vals)
         return f"Err({ok_str}, {vals_str})"