Update black version (#1059)

### Before submitting

Please complete the following checklist when submitting a PR:

- [ ] All new features must include a unit test.
If you've fixed a bug or added code that should be tested, add a test to
the
      [`tests`](../tests) directory!

- [ ] All new functions and code must be clearly commented and
documented.
If you do make documentation changes, make sure that the docs build and
      render correctly by running `make docs`.

- [ ] Ensure that the test suite passes, by running `make test`.

- [x] Add a new entry to the `.github/CHANGELOG.md` file, summarizing
the
      change, and including a link back to the PR.

- [ ] Ensure that code is properly formatted by running `make format`. 

When all the above are checked, delete everything above the dashed
line and fill in the pull request template.


------------------------------------------------------------------------------------------------------------

**Context:**
A new version of black formatter (25.1.0) has been released, which
breaks our CI.

**Description of the Change:**
Update code to comply with this version of black.

**Benefits:**
CI passes. Nicer styling.

**Possible Drawbacks:**

**Related GitHub Issues:**

[sc-83330]

---------

Co-authored-by: ringo-but-quantum <[email protected]>

.github/CHANGELOG.md

@@ -6,6 +6,9 @@
 
 ### Improvements
 
+* Update source code to use black formatter 25.1.0.
+  [(#1059)](https://github.com/PennyLaneAI/pennylane-lightning/pull/1059)
+
 * Replace the type checking using the property `return_type` of `MeasurementProcess` with direct `isinstance` checks.
   [(#1044)](https://github.com/PennyLaneAI/pennylane-lightning/pull/1044)
 

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
 -   repo: https://github.com/psf/black
-    rev: 23.7.0
+    rev: 25.1.0
     hooks:
     - id: black
       args: [--line-length=100]

README.rst

@@ -487,7 +487,7 @@ Black & Pylint
 ==============
 
 If you contribute to the Python code, please mind the following.
-The Python code is formatted with the PEP 8 compliant opinionated formatter `Black <https://github.com/psf/black>`_ (`black==23.7.0`).
+The Python code is formatted with the PEP 8 compliant opinionated formatter `Black <https://github.com/psf/black>`_ (`black==25.1.0`).
 We set a line width of a 100 characters.
 The Python code is statically analyzed with `Pylint <https://pylint.readthedocs.io/en/stable/>`_.
 We set up a pre-commit hook (see `Git hooks <https://git-scm.com/docs/githooks>`_) to run both of these on `git commit`.

pennylane_lightning/core/_version.py

@@ -13,7 +13,7 @@
 # limitations under the License.
 
 """Version information.
-   Version number (major.minor.patch[-label])
+Version number (major.minor.patch[-label])
 """
 
-__version__ = "0.41.0-dev11"
+__version__ = "0.41.0-dev12"

pennylane_lightning/lightning_tensor/lightning_tensor.py

@@ -13,7 +13,7 @@
 # limitations under the License.
 """
 This module contains the LightningTensor class that inherits from the new device interface.
-It is a device to perform tensor network simulations of quantum circuits using `cutensornet`. 
+It is a device to perform tensor network simulations of quantum circuits using `cutensornet`.
 """
 from dataclasses import replace
 from numbers import Number

requirements-dev.txt

@@ -9,7 +9,7 @@ pytest-mock>=3.7.0
 pytest-xdist>=2.5.0
 pytest-split
 flaky>=3.7.0
-black>=21
+black>=25.1.0
 clang-tidy~=16.0
 clang-format~=16.0
 isort==5.13.2

requirements.txt

@@ -5,7 +5,7 @@ pytest-cov>=3.0.0
 pytest-mock>=3.7.0
 pytest-xdist>=2.5.0
 flaky>=3.7.0
-black>=21
+black>=25.1.0
 clang-tidy~=16.0
 clang-format~=16.0
 isort==5.13.2

tests/lightning_tensor/test_serialize_tensor.py

@@ -258,11 +258,11 @@ def test_mixed_tensor_return(self, use_csingle, wires_map):
 
     @pytest.mark.parametrize(
         "test_hermobs0",
-        [(qml.Hermitian(np.eye(2), wires=[0]))],
+        [qml.Hermitian(np.eye(2), wires=[0])],
     )
     @pytest.mark.parametrize(
         "test_hermobs1",
-        [(qml.Hermitian(np.ones((2, 2)), wires=[0]))],
+        [qml.Hermitian(np.ones((2, 2)), wires=[0])],
     )
     def test_hamiltonian_return(self, test_hermobs0, test_hermobs1, use_csingle, wires_map):
         """Test expected serialization for a Hamiltonian return"""

tests/test_serialize.py

@@ -276,11 +276,11 @@ def test_mixed_tensor_return(self, use_csingle, wires_map):
 
     @pytest.mark.parametrize(
         "test_hermobs0",
-        [(qml.Hermitian(np.eye(4), wires=[0, 1]))],
+        [qml.Hermitian(np.eye(4), wires=[0, 1])],
     )
     @pytest.mark.parametrize(
         "test_hermobs1",
-        [(qml.Hermitian(np.ones((8, 8)), wires=range(3)))],
+        [qml.Hermitian(np.ones((8, 8)), wires=range(3))],
     )
     @pytest.mark.parametrize("use_csingle", [True, False])
     @pytest.mark.parametrize("wires_map", [wires_dict, None])
@@ -328,11 +328,11 @@ def test_hamiltonian_return(self, test_hermobs0, test_hermobs1, use_csingle, wir
 
     @pytest.mark.parametrize(
         "test_hermobs0",
-        [(qml.Hermitian(np.eye(4), wires=[0, 1]))],
+        [qml.Hermitian(np.eye(4), wires=[0, 1])],
     )
     @pytest.mark.parametrize(
         "test_hermobs1",
-        [(qml.Hermitian(np.ones((8, 8)), wires=range(3)))],
+        [qml.Hermitian(np.ones((8, 8)), wires=range(3))],
     )
     @pytest.mark.parametrize("use_csingle", [True, False])
     @pytest.mark.parametrize("wires_map", [wires_dict, None])
@@ -394,11 +394,11 @@ def test_hamiltonian_tensor_return(self, test_hermobs0, test_hermobs1, use_csing
 
     @pytest.mark.parametrize(
         "test_hermobs0",
-        [(qml.Hermitian(np.eye(4), wires=[0, 1]))],
+        [qml.Hermitian(np.eye(4), wires=[0, 1])],
     )
     @pytest.mark.parametrize(
         "test_hermobs1",
-        [(qml.Hermitian(np.ones((8, 8)), wires=range(3)))],
+        [qml.Hermitian(np.ones((8, 8)), wires=range(3))],
     )
     @pytest.mark.parametrize("use_csingle", [True, False])
     @pytest.mark.parametrize("wires_map", [wires_dict, None])