Migrate to ruff tooling and config

Signed-off-by: Shah, Karan <[email protected]>

CONTRIBUTING.md

@@ -60,7 +60,7 @@ pip install -r linters-requirements.txt
 
 ## Code style
 
-OpenFL uses [black](https://black.readthedocs.io/en/stable/), [isort](https://pycqa.github.io/isort/) and [precommit](https://pre-commit.com/) to format the code.
+OpenFL uses [ruff](https://github.com/astral-sh/ruff) to lint/format code and [precommit](https://pre-commit.com/) checks.
 
 Run the following command at the **root** directory of the repo to format your code.
 

linters-requirements.txt

@@ -1,4 +1,2 @@
-black
-flake8
-isort
 pre-commit
+ruff

pyproject.toml

@@ -1,7 +1,27 @@
-[tool.black]
+[tool.ruff]
 line-length = 100
 
-[tool.isort]
-profile = "black"
-force_single_line = "False"
-line_length = 100
+[tool.ruff.lint]
+select = [
+    "B",  # Bandit security checks (e.g., detecting insecure function use).
+    "C",  # Cyclomatic complexity, used to flag overly complex functions.
+    "E",  # PEP8 errors (e.g., style issues).
+    "F",  # Pyflakes errors, like unused imports or undefined names.
+    "W",  # PEP8 warnings (e.g., deprecations).
+    "B9",  # Bugbear, for additional warnings about potentially error-prone code.
+    "I",  # isort
+]
+ignore = [
+    "E266",  # too many leading '#' for block comments
+    "E741",  # ambiguous variable name
+    "E731",  # do not assign a `lambda` expression, use a `def`
+    "B904",  # ignore exception distinguishing
+    "B006",  # mutable data structures as default args
+]
+
+[tool.ruff.lint.per-file-ignores]
+"**/__init__.py" = ["E501", "F401"]  # lines too long; imported but unused
+
+[tool.ruff.lint.isort]
+force-single-line = false
+known-first-party = ["openfl"]

shell/format.sh

@@ -6,8 +6,6 @@ base_dir=$(dirname $(dirname $0))
 # Run the pre-commit checks
 pre-commit run --all-files
 
-isort --sp "${base_dir}/pyproject.toml" openfl
+ruff check --config "${base_dir}/pyproject.toml" --fix openfl/
 
-black --config "${base_dir}/pyproject.toml" openfl
-
-flake8 --config "${base_dir}/setup.cfg" openfl
+ruff format --config "${base_dir}/pyproject.toml" openfl/

shell/lint.sh

@@ -6,8 +6,6 @@ base_dir=$(dirname $(dirname $0))
 # Run the pre-commit checks
 pre-commit run --all-files
 
-isort --sp "${base_dir}/pyproject.toml" --check openfl
+ruff check --config "${base_dir}/pyproject.toml" openfl/
 
-black --config "${base_dir}/pyproject.toml" --check openfl
-
-flake8 --config "${base_dir}/setup.cfg" --show-source openfl
+ruff format --check --config "${base_dir}/pyproject.toml" openfl/