[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

src/qibochem/ansatz/qeb.py

@@ -1,6 +1,7 @@
-import numpy as np 
+import numpy as np
 import qibo
-from qibo import Circuit, models, gates
+from qibo import Circuit, gates, models
+
 
 def qeb_circuit(n_qubits, excitation, theta=0.0, trotter_steps=1) -> Circuit:
     r"""
@@ -20,26 +21,26 @@ def qeb_circuit(n_qubits, excitation, theta=0.0, trotter_steps=1) -> Circuit:
     Returns:
         Qibo ``Circuit``: Circuit corresponding to a single UCC excitation
     """
-    
+
     n_orbitals = len(excitation)
     assert n_orbitals % 2 == 0, f"{excitation} must have an even number of items"
 
     n_tuples = len(excitation) // 2
     i_array = excitation[0:n_tuples]
     a_array = excitation[n_tuples:]
 
-    ry_angle = 2.0*theta
+    ry_angle = 2.0 * theta
 
     mcry_controls = excitation[0:-1]
-    
+
     fwd_gates = []
 
     for _i in reversed(i_array[0:-1]):
         fwd_gates.append(gates.CNOT(i_array[-1], _i))
-    
+
     for _a in reversed(a_array[0:-1]):
         fwd_gates.append(gates.CNOT(a_array[-1], _a))
-    
+
     fwd_gates.append(gates.CNOT(a_array[-1], i_array[-1]))
 
     # MCRY
@@ -52,7 +53,7 @@ def qeb_circuit(n_qubits, excitation, theta=0.0, trotter_steps=1) -> Circuit:
 
     mcry_gate = []
     mcry_gate.append(gates.RY(a_array[-1], ry_angle).controlled_by(*mcry_controls))
-    
+
     gate_list = []
 
     for _g in fwd_gates:
@@ -62,12 +63,8 @@ def qeb_circuit(n_qubits, excitation, theta=0.0, trotter_steps=1) -> Circuit:
     for _g in reversed(fwd_gates):
         gate_list.append(_g)
 
-
     circuit = Circuit(n_qubits)
     for _g in gate_list:
         circuit.add(_g)
-
-    return circuit    
-
-
 
+    return circuit