Add Python 3.12 support (#597)

* update python versions for CI

* sanity check before we try again

* sanity check but with quotes around 3.10

* add 3.12 to tests

* will this fix integration tests?

* does this fix it?

* ??

* ?????

* remove references to 3.9 and update format.yml

.github/workflows/format.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: 3.9
+          python-version: "3.10"
 
       - name: Install dependencies
         run: pip install black pylint==2.7.4

.github/workflows/tests.yml

@@ -11,7 +11,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [3.9, '3.10', '3.11']
+        python-version: ['3.10', '3.11', '3.12']
 
     steps:
       - name: Cancel Previous Runs
@@ -29,6 +29,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
+          pip install setuptools
           pip install git+https://github.com/PennyLaneAI/pennylane.git
           pip install -r requirements-ci.txt
           pip install wheel pytest pytest-cov pytest-mock flaky --upgrade
@@ -63,11 +64,12 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: 3.9
+          python-version: "3.12"
 
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
+          pip install setuptools
           pip install git+https://github.com/PennyLaneAI/pennylane.git
           pip install -r requirements-ci.txt
           pip install wheel pytest pytest-cov pytest-mock pytest-benchmark flaky --upgrade

README.rst

@@ -53,7 +53,7 @@ Features
 Installation
 ============
 
-This plugin requires Python version 3.9 and above, as well as PennyLane and Qiskit.
+This plugin requires Python version 3.10 and above, as well as PennyLane and Qiskit.
 Installation of this plugin, as well as all dependencies, can be done using ``pip``:
 
 .. code-block:: bash

setup.py

@@ -80,9 +80,9 @@
     "Operating System :: Microsoft :: Windows",
     "Programming Language :: Python",
     'Programming Language :: Python :: 3',
-    'Programming Language :: Python :: 3.9',
     'Programming Language :: Python :: 3.10',
     'Programming Language :: Python :: 3.11',
+    'Programming Language :: Python :: 3.12',
     'Programming Language :: Python :: 3 :: Only',
     "Topic :: Scientific/Engineering :: Physics"
 ]