chore(ci): replace flake8 with Ruff as a linter

.pre-commit-config.yaml

@@ -17,16 +17,9 @@ repos:
         entry: poetry run black
         language: system
         types: [python]
-      - id: isort
-        name: formatting::isort
-        entry: poetry run isort
-        language: system
-        types: [python]
-  - repo: local
-    hooks:
-      - id: flake8
-        name: linting::flake8
-        entry: poetry run flake8
+      - id: ruff
+        name: linting-format::ruff
+        entry: poetry run ruff
         language: system
         types: [python]
   - repo: https://github.com/igorshubovych/markdownlint-cli

CONTRIBUTING.md

@@ -76,7 +76,7 @@ You might find useful to run both the documentation website and the API referenc
 | Category              | Convention                                                                                                                                                                                                                                                                  |
 | --------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | **Docstring**         | We use a slight variation of Numpy convention with markdown to help generate more readable API references.                                                                                                                                                                  |
-| **Style guide**       | We use black as well as flake8 extensions to enforce beyond good practices [PEP8](https://pep8.org/). We use type annotations and enforce static type checking at CI (mypy).                                                                                                |
+| **Style guide**       | We use black as well as [Ruff](https://beta.ruff.rs/docs/) extensions to enforce beyond good practices [PEP8](https://pep8.org/). We use type annotations and enforce static type checking at CI (mypy).                                                                                                |
 | **Core utilities**    | Core utilities use a Class, always accept `service` as a constructor parameter, can work in isolation, and are also available in other languages implementation.                                                                                                            |
 | **Utilities**         | Utilities are not as strict as core and focus on solving a developer experience problem while following the project [Tenets](https://docs.powertools.aws.dev/lambda-python/#tenets).                                                                               |
 | **Exceptions**        | Specific exceptions live within utilities themselves and use `Error` suffix e.g. `MetricUnitError`.                                                                                                                                                                         |
@@ -106,7 +106,7 @@ Looking at the existing issues is a great way to find something to contribute on
 
 This project has adopted the [Amazon Open Source Code of Conduct](https://aws.github.io/code-of-conduct).
 For more information see the [Code of Conduct FAQ](https://aws.github.io/code-of-conduct-faq) or contact
-opensource-codeofconduct@amazon.com with any additional questions or comments.
+<opensource-codeofconduct@amazon.com> with any additional questions or comments.
 
 ## Security issue notifications
 

Makefile

@@ -17,11 +17,10 @@ dev-gitpod:
 	pre-commit install
 
 format:
-	poetry run isort aws_lambda_powertools tests examples
 	poetry run black aws_lambda_powertools tests examples
 
 lint: format
-	poetry run flake8 aws_lambda_powertools tests examples
+	poetry run ruff aws_lambda_powertools tests examples
 
 lint-docs:
 	docker run -v ${PWD}:/markdown 06kellyjac/markdownlint-cli "docs"

pyproject.toml

@@ -105,6 +105,7 @@ mypy = "^1.1.1"
 types-python-dateutil = "^2.8.19.6"
 httpx = ">=0.23.3,<0.25.0"
 sentry-sdk = "^1.22.2"
+ruff = "^0.0.272"
 
 [tool.coverage.run]
 source = ["aws_lambda_powertools"]

ruff.toml

@@ -0,0 +1,76 @@
+# Enable rules.
+select = [
+    "A",
+    "C4",
+    "C90",
+    "COM",
+    #"D", # pydocstyle - not enabled temporarily
+    "E",
+    "ERA",
+    "FA",
+    "FIX",
+    "F",
+    "I",
+    "ICN",
+    "ISC",
+    "PLE",
+    "PLC",
+    "PLR",
+    "PLW",
+    "PL",
+    "PYI",
+    "Q",
+    "PTH",
+    "TD",
+    "W"
+]
+
+# Ignore specific rules
+ignore = [
+    "W291", # https://beta.ruff.rs/docs/rules/trailing-whitespace/
+    "PLR0913", # https://beta.ruff.rs/docs/rules/too-many-arguments/
+    "PLR2004", #https://beta.ruff.rs/docs/rules/magic-value-comparison/
+    "PLW0603", #https://beta.ruff.rs/docs/rules/global-statement/
+    "COM812", # Trailing comma missing - disabled temporarily
+    "PLC1901", # Compare-to-empty-string - disabled temporarily
+    "ERA001", # Found commented-out code - disabled temporarily
+    "PLW", # Warning category - disabled temporarily
+    "PLR", # Refactoring category - disabled temporarily
+    "PLC", # Convention category - disabled temporarily
+    "PLE", # Error category - disabled temporarily
+    "ISC", # flake8-implicit-str-concat - disabled temporarily
+    "E501", # Line too long - disabled temporarily
+    "I001", # isort - disabled temporarily
+    ]
+
+# Exclude files and directories
+exclude = ["docs", ".eggs", "setup.py", "example", ".aws-sam", ".git", "dist", ".md", ".yaml", "example/samconfig.toml", ".txt", ".ini"]
+
+# Maximum line length
+line-length = 120
+
+
+#fix = true
+#fixable = ["I", "COM812", "W"]
+
+# See: https://github.com/astral-sh/ruff/issues/128
+typing-modules = ["aws_lambda_powertools.utilities.parser.types"]
+
+[mccabe]
+# Maximum cyclomatic complexity
+max-complexity = 15
+
+[pylint]
+# Maximum number of nested blocks
+max-branches = 15
+# Maximum number of if statements in a function
+max-statements = 70
+
+[isort]
+split-on-trailing-comma = true
+
+[per-file-ignores]
+# Ignore specific rules for specific files
+"tests/e2e/utils/data_builder/__init__.py" = ["F401"]
+"tests/e2e/utils/data_fetcher/__init__.py" = ["F401"]
+"aws_lambda_powertools/utilities/data_classes/s3_event.py" = ["A003"]