From 608c55bcf1e53c511434a3e9c2f1e2fe0461aea4 Mon Sep 17 00:00:00 2001
From: Max Rossmannek <oss@zurich.ibm.com>
Date: Fri, 1 Dec 2023 17:43:34 +0100
Subject: [PATCH] Linting and formatting

---
 qiskit_nature/second_q/properties/angular_momentum.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/qiskit_nature/second_q/properties/angular_momentum.py b/qiskit_nature/second_q/properties/angular_momentum.py
index f86574a57..686361e08 100644
--- a/qiskit_nature/second_q/properties/angular_momentum.py
+++ b/qiskit_nature/second_q/properties/angular_momentum.py
@@ -80,8 +80,8 @@ def overlap(self, overlap: np.ndarray | None) -> None:
         if overlap is not None:
             norb = self.num_spatial_orbitals
             delta = np.eye(2 * norb)
-            delta[:norb,:norb] -= overlap.T @ overlap
-            delta[norb:,norb:] -= overlap @ overlap.T
+            delta[:norb, :norb] -= overlap.T @ overlap
+            delta[norb:, norb:] -= overlap @ overlap.T
             summed = np.einsum("ij->", np.abs(delta))
             if not np.isclose(summed, 0.0, atol=1e-6):
                 LOGGER.warning(
@@ -95,10 +95,10 @@ def overlap(self, overlap: np.ndarray | None) -> None:
                     "spin contamination in both subspaces. You should verify whether this is "
                     "intentional/acceptable or whether your choice of active space can be improved."
                     " As a reference, here is the summed-absolute deviation of `S^T @ S` from the "
-                    f"identity: {summed}"
+                    "identity: %s",
+                    str(summed),
                 )
 
-
     def second_q_ops(self) -> Mapping[str, FermionicOp]:
         """Returns the second quantized angular momentum operator.