replace black with ruff in precommit

.pre-commit-config.yaml

@@ -1,10 +1,4 @@
 repos:
-  # Run Black - the uncompromising Python code formatter
-  - repo: https://github.com/psf/black
-    rev: 24.4.2
-    hooks:
-      - id: black-jupyter
-
   # Add some general purpose useful hooks
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.6.0
@@ -20,6 +14,15 @@ repos:
       # Unify file endings
       - id: end-of-file-fixer
 
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.5.2
+    hooks:
+      - id: ruff
+        types_or: [python, pyi, jupyter]
+        args: [--fix]
+      - id: ruff-format
+        types_or: [python, pyi, jupyter]
+
   # Make sure that Jupyter notebooks under version control
   # have their outputs stripped before committing
   - repo: https://github.com/kynan/nbstripout
@@ -36,6 +39,5 @@ repos:
         args:
           [
             --ignore-missing-imports,
-            --disallow-untyped-defs,
             --warn-redundant-casts,
           ]

notebooks/prototyping.ipynb

@@ -52,7 +52,6 @@
    "cell_type": "markdown",
    "id": "5",
    "metadata": {},
-   "outputs": [],
    "source": [
     "It is very easy to go from doing this to creating and running a pytest test instead."
    ]
@@ -82,7 +81,7 @@
    "id": "8",
    "metadata": {},
    "source": [
-    "Then in any cell where we define a pytest test (i.e. any function whose name begins with test that contains assertions), we can add the magic `%%ipytest` to execute it using pytest:"
+    "Then in any cell where we define a pytest test (i.e. any function whose name begins with `test` that contains assertions), we can add the magic `%%ipytest` to execute it using pytest:"
    ]
   },
   {
@@ -135,6 +134,18 @@
    "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.12.3"
   }
  },
  "nbformat": 4,

tests/test_board_property.py

@@ -34,7 +34,7 @@ def sample_valid_n_x_y(draw: st.DrawFn) -> tuple[int, int, int]:
 
 @given(n_x_y=sample_valid_n_x_y())
 def test_property_empty_board_is_empty_with_composite(
-    n_x_y: tuple[int, int, int]
+    n_x_y: tuple[int, int, int],
 ) -> None:
     # no assume required here as all the x,y we generate are < n
     n, x, y = n_x_y