Merge remote-tracking branch 'origin/feat-multi-observable' into feat-multi-observable

Author: hJaffaliColibritd

mpqp/core/instruction/measurement/expectation_value.py

@@ -16,7 +16,10 @@ class to define your observable, and a :class:`ExpectationMeasure` to perform
 
 from mpqp.core.instruction.gates.native_gates import SWAP
 from mpqp.core.instruction.measurement.measure import Measure
-from mpqp.core.instruction.measurement.pauli_string import PauliString, PauliStringMonomial
+from mpqp.core.instruction.measurement.pauli_string import (
+    PauliString,
+    PauliStringMonomial,
+)
 from mpqp.core.languages import Language
 from mpqp.tools.display import one_lined_repr
 from mpqp.tools.errors import NumberQubitsError
@@ -370,7 +373,7 @@ def _check_targets_order(self):
         )
 
     def get_pauli_grouping(
-            self, method: Literal["full_commutative_graph", "b"] = "full_commutative_graph"
+        self, method: Literal["full_commutative_graph", "b"] = "full_commutative_graph"
     ) -> list[set[PauliStringMonomial]]:
         """
         TODO: decompose the observables, regroup the pauli measurements by commutativity relation,

mpqp/tools/pauli_grouping.py

@@ -4,5 +4,6 @@
 def full_commutation_pauli_grouping(monomials: set[PauliStringMonomial]):
     pass
 
+
 def qubit_wise_commutation_pauli_grouping(monomials: set[PauliStringMonomial]):
     pass

tests/execution/test_multi_observable.py

@@ -15,17 +15,17 @@ def list_circuits():
 
 
 def list_observables():
-    return [[
-        Observable(np.ones((4, 4))),
-        Observable(np.diag([1, 2, -3, 4])),
-        # TODO add random observable ?
-    ]]
+    return [
+        [
+            Observable(np.ones((4, 4))),
+            Observable(np.diag([1, 2, -3, 4])),
+            # TODO add random observable ?
+        ]
+    ]
 
 
 def list_devices():
-    return [
-        IBMDevice.AER_SIMULATOR
-    ]
+    return [IBMDevice.AER_SIMULATOR]
 
 
 @pytest.mark.parametrize(