Add support for Python 3.12 (#11262)

* Add support for Python 3.12 Python 3.12.0 was released on 10-02-2023, this commit marks the start of support for Python 3.12 in Qiskit. It adds the supported Pythonv ersion in the package metadata and updates the CI configuration to run test jobs on Python 3.12 and build Python 3.12 wheels on release. Fixes: #10887 * Add release note * Avoid deprecated `datetime.datetime.utcnow()` usage In Python 3.12 `datetime.datetime.utcnow()` has been deprecated, being replaced by: `datetime.datetime.now(datetime.UTC)`. This commit updates the usage of `utcnow()` to follow the new convention. * Adjust UTC usage to support Python 3.8 The recommended alternative for using utcnow() in the deprecation warnings emitted by Python 3.12 are not compatible with Python 3.8. The datetime.UTC alias was not added to Python until Python 3.11. To ensure that the code is compatible with Python < 3.11 this commit updates all the usage of datetime.UTC to use datetime.timezone.utc instead, which is what datetime.UTC aliases to in Python >=3.11. (cherry picked from commit 5a5c9e3) # Conflicts: # requirements.txt
Qiskit · Nov 23, 2023 · 3960c34 · 3960c34
1 parent 5fef2b5
commit 3960c34
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diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
@@ -21,7 +21,7 @@ jobs:
           python-version: '3.10'
       - uses: dtolnay/rust-toolchain@stable
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.13.0
+        uses: pypa/cibuildwheel@v2.16.2
       - uses: actions/upload-artifact@v3
         with:
           path: ./wheelhouse/*.whl
@@ -42,7 +42,7 @@ jobs:
           python-version: '3.10'
       - uses: dtolnay/rust-toolchain@stable
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.13.0
+        uses: pypa/cibuildwheel@v2.16.2
         env:
           CIBW_BEFORE_ALL: rustup target add aarch64-apple-darwin
           CIBW_ARCHS_MACOS: arm64 universal2
@@ -91,7 +91,7 @@ jobs:
         with:
           platforms: all
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.13.0
+        uses: pypa/cibuildwheel@v2.16.2
         env:
           CIBW_ARCHS_LINUX: s390x
           CIBW_TEST_SKIP: "cp*"
@@ -124,7 +124,7 @@ jobs:
         with:
           platforms: all
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.13.0
+        uses: pypa/cibuildwheel@v2.16.2
         env:
           CIBW_ARCHS_LINUX: ppc64le
           CIBW_TEST_SKIP: "cp*"
@@ -157,7 +157,7 @@ jobs:
         with:
           platforms: all
       - name: Build wheels
-        uses: pypa/cibuildwheel@v2.13.0
+        uses: pypa/cibuildwheel@v2.16.2
         env:
           CIBW_ARCHS_LINUX: aarch64
       - uses: actions/upload-artifact@v3

diff --git a/azure-pipelines.yml b/azure-pipelines.yml
@@ -31,7 +31,7 @@ parameters:
   - name: "supportedPythonVersions"
     displayName: "All supported versions of Python"
     type: object
-    default: ["3.8", "3.9", "3.10", "3.11"]
+    default: ["3.8", "3.9", "3.10", "3.11", "3.12"]
 
   - name: "minimumPythonVersion"
     displayName: "Minimum supported version of Python"
@@ -41,7 +41,7 @@ parameters:
   - name: "maximumPythonVersion"
     displayName: "Maximum supported version of Python"
     type: string
-    default: "3.11"
+    default: "3.12"
 
   # These two versions of Python can be chosen somewhat arbitrarily, but we get
   # slightly better coverage per PR if they're neither the maximum nor minimum

diff --git a/constraints.txt b/constraints.txt
@@ -5,12 +5,12 @@ jsonschema==3.2.0
 # Numpy 1.25 deprecated some behaviours that we used, and caused the isometry
 # tests to flake. See https://github.com/Qiskit/qiskit-terra/issues/10305,
 # remove pin when resolving that.
-numpy<1.25
+numpy<1.25; python_version<'3.12'
 
 # Scipy 1.11 seems to have caused an instability in the Weyl coordinates
 # eigensystem code for one of the test cases.  See
 # https://github.com/Qiskit/qiskit-terra/issues/10345 for current details.
-scipy<1.11
+scipy<1.11; python_version<'3.12'
 
 # Aer 0.13 causes several randomised tests to begin failing, and some
 # `QuantumInstance` use of noise models to raise exceptions.  These need fixes

diff --git a/qiskit/providers/fake_provider/fake_backend_v2.py b/qiskit/providers/fake_provider/fake_backend_v2.py
@@ -42,7 +42,7 @@ def __init__(self):
             None,
             name="FakeV2",
             description="A fake BackendV2 example",
-            online_date=datetime.datetime.utcnow(),
+            online_date=datetime.datetime.now(datetime.timezone.utc),
             backend_version="0.0.1",
         )
         self._qubit_properties = [
@@ -116,7 +116,7 @@ def __init__(self, bidirectional=True):
             None,
             name="Fake5QV2",
             description="A fake BackendV2 example",
-            online_date=datetime.datetime.utcnow(),
+            online_date=datetime.datetime.now(datetime.timezone.utc),
             backend_version="0.0.1",
         )
         qubit_properties = [
@@ -188,7 +188,7 @@ def __init__(self):
             None,
             name="FakeSimpleV2",
             description="A fake simple BackendV2 example",
-            online_date=datetime.datetime.utcnow(),
+            online_date=datetime.datetime.now(datetime.timezone.utc),
             backend_version="0.0.1",
         )
         self._lam = Parameter("lambda")

diff --git a/qiskit/providers/fake_provider/fake_mumbai_v2.py b/qiskit/providers/fake_provider/fake_mumbai_v2.py
@@ -39,7 +39,7 @@ def __init__(self):
         super().__init__(
             name="FakeMumbaiFractionalCX",
             description="A fake BackendV2 example based on IBM Mumbai",
-            online_date=datetime.datetime.utcnow(),
+            online_date=datetime.datetime.now(datetime.timezone.utc),
             backend_version="0.0.1",
         )
         dt = 0.2222222222222222e-9

diff --git a/qiskit/transpiler/target.py b/qiskit/transpiler/target.py
@@ -1477,7 +1477,7 @@ def target_to_backend_properties(target: Target):
                 if getattr(props, "duration", None) is not None:
                     property_list.append(
                         {
-                            "date": datetime.datetime.utcnow(),
+                            "date": datetime.datetime.now(datetime.timezone.utc),
                             "name": "gate_length",
                             "unit": "s",
                             "value": props.duration,
@@ -1486,7 +1486,7 @@ def target_to_backend_properties(target: Target):
                 if getattr(props, "error", None) is not None:
                     property_list.append(
                         {
-                            "date": datetime.datetime.utcnow(),
+                            "date": datetime.datetime.now(datetime.timezone.utc),
                             "name": "gate_error",
                             "unit": "",
                             "value": props.error,
@@ -1511,7 +1511,7 @@ def target_to_backend_properties(target: Target):
                 if getattr(props, "error", None) is not None:
                     props_list.append(
                         {
-                            "date": datetime.datetime.utcnow(),
+                            "date": datetime.datetime.now(datetime.timezone.utc),
                             "name": "readout_error",
                             "unit": "",
                             "value": props.error,
@@ -1520,7 +1520,7 @@ def target_to_backend_properties(target: Target):
                 if getattr(props, "duration", None) is not None:
                     props_list.append(
                         {
-                            "date": datetime.datetime.utcnow(),
+                            "date": datetime.datetime.now(datetime.timezone.utc),
                             "name": "readout_length",
                             "unit": "s",
                             "value": props.duration,

diff --git a/qiskit_pkg/setup.py b/qiskit_pkg/setup.py
@@ -52,6 +52,7 @@
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Topic :: Scientific/Engineering",
     ],
     keywords="qiskit sdk quantum",

diff --git a/releasenotes/notes/add-py312-support-7077426af34ac5da.yaml b/releasenotes/notes/add-py312-support-7077426af34ac5da.yaml
@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    Added support for using Qiskit with Python 3.12.
diff --git a/requirements.txt b/requirements.txt
@@ -8,7 +8,11 @@ dill>=0.3
 python-dateutil>=2.8.0
 stevedore>=3.0.0
 typing-extensions; python_version<'3.11'
+<<<<<<< HEAD
 # symengine pinning needed due lowered precision handling complex
 # multiplication in version 0.10 wich breaks parameter assignment test
 # (can be removed once issue is fix)
 symengine>=0.9, <0.10; platform_machine == 'x86_64' or platform_machine == 'aarch64' or platform_machine == 'ppc64le' or platform_machine == 'amd64' or platform_machine == 'arm64'
+=======
+symengine>=0.9,!=0.10.0
+>>>>>>> 5a5c9e33f (Add support for Python 3.12 (#11262))
diff --git a/setup.py b/setup.py
@@ -78,6 +78,7 @@
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Topic :: Scientific/Engineering",
     ],
     keywords="qiskit sdk quantum",

diff --git a/test/python/providers/test_fake_backends.py b/test/python/providers/test_fake_backends.py
@@ -497,7 +497,7 @@ def test_filter_faulty_qubits_backend_v2_converter(self):
         props_dict = backend.properties().to_dict()
         for i in range(62, 67):
             non_operational = {
-                "date": datetime.datetime.utcnow(),
+                "date": datetime.datetime.now(datetime.timezone.utc),
                 "name": "operational",
                 "unit": "",
                 "value": 0,
@@ -518,7 +518,7 @@ def test_filter_faulty_qubits_backend_v2_converter_with_delay(self):
         props_dict = backend.properties().to_dict()
         for i in range(62, 67):
             non_operational = {
-                "date": datetime.datetime.utcnow(),
+                "date": datetime.datetime.now(datetime.timezone.utc),
                 "name": "operational",
                 "unit": "",
                 "value": 0,
@@ -539,7 +539,7 @@ def test_filter_faulty_qubits_and_gates_backend_v2_converter(self):
         props_dict = backend.properties().to_dict()
         for i in range(62, 67):
             non_operational = {
-                "date": datetime.datetime.utcnow(),
+                "date": datetime.datetime.now(datetime.timezone.utc),
                 "name": "operational",
                 "unit": "",
                 "value": 0,
@@ -556,7 +556,7 @@ def test_filter_faulty_qubits_and_gates_backend_v2_converter(self):
             (34, 24),
         }
         non_operational_gate = {
-            "date": datetime.datetime.utcnow(),
+            "date": datetime.datetime.now(datetime.timezone.utc),
             "name": "operational",
             "unit": "",
             "value": 0,
@@ -591,7 +591,7 @@ def test_filter_faulty_gates_v2_converter(self):
             (34, 24),
         }
         non_operational_gate = {
-            "date": datetime.datetime.utcnow(),
+            "date": datetime.datetime.now(datetime.timezone.utc),
             "name": "operational",
             "unit": "",
             "value": 0,
@@ -618,7 +618,7 @@ def test_filter_faulty_no_faults_v2_converter(self):
     def test_faulty_full_path_transpile_connected_cmap(self, opt_level):
         backend = FakeYorktown()
         non_operational_gate = {
-            "date": datetime.datetime.utcnow(),
+            "date": datetime.datetime.now(datetime.timezone.utc),
             "name": "operational",
             "unit": "",
             "value": 0,

diff --git a/tox.ini b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.3.0
-envlist = py38, py39, py310, py311, lint-incr
+envlist = py38, py39, py310, py311, py312, lint-incr
 isolated_build = true
 
 [testenv]