diff --git a/cirq-core/cirq/sim/classical_simulator.py b/cirq-core/cirq/sim/classical_simulator.py
index 77e7b1f6679..8361c5c43fc 100644
--- a/cirq-core/cirq/sim/classical_simulator.py
+++ b/cirq-core/cirq/sim/classical_simulator.py
@@ -1,7 +1,7 @@
 from typing import Dict
-from collections import defaultdict 
-from cirq.sim.simulator import SimulatesSamples 
-from cirq import ops, circuits 
+from collections import defaultdict
+from cirq.sim.simulator import SimulatesSamples
+from cirq import ops, circuits
 import numpy as np
 
 
@@ -78,4 +78,4 @@ def _run(
                 ):
                     raise ValueError("Can not simulate gates other than cirq.XGate or cirq.CNOT")
 
-        return results_dict
\ No newline at end of file
+        return results_dict