Revert "Replace str(uuid4()) with uuid4().hex (#492)"

qiskit_experiments/database_service/db_analysis_result.py

@@ -90,7 +90,7 @@ def __init__(
         """
         # Data to be stored in DB.
         self._experiment_id = experiment_id
-        self._id = result_id or uuid.uuid4().hex
+        self._id = result_id or str(uuid.uuid4())
         self._name = name
         self._value = copy.deepcopy(value)
         self._extra = copy.deepcopy(extra or {})

qiskit_experiments/database_service/db_experiment_data.py

@@ -156,7 +156,7 @@ def __init__(
         self._auto_save = False
         self._set_service_from_backend(backend)
 
-        self._id = experiment_id or uuid.uuid4().hex
+        self._id = experiment_id or str(uuid.uuid4())
         self._parent_id = parent_id
         self._type = experiment_type
         self._tags = tags or []
@@ -287,7 +287,7 @@ def add_analysis_callback(self, callback: Callable, **kwargs: Any):
                       keywork arguments passed to this method.
             **kwargs: Keyword arguments to be passed to the callback function.
         """
-        callback_id = uuid.uuid4().hex
+        callback_id = uuid.uuid4()
         self._callback_statuses[callback_id] = CallbackStatus(callback, kwargs=kwargs)
 
         # Wrap callback function to handle reporting status and catching

test/calibration/test_calibrations.py

@@ -1302,7 +1302,7 @@ class TestSavingAndLoading(CrossResonanceTest):
 
     def setUp(self):
         """Setup the test."""
-        self._prefix = uuid.uuid4().hex
+        self._prefix = str(uuid.uuid4())
         super().setUp()
 
     def tearDown(self):