Switch from flake8 to ruff for linting

.github/workflows/lint.yml

@@ -33,5 +33,5 @@ jobs:
 
       - name: Install dependencies
         run: uv sync --extra dev
-      - name: Lint with flake8
-        run: uv run flake8
+      - name: Lint with ruff
+        run: uv run ruff check

ably/util/crypto.py

@@ -153,7 +153,7 @@ def get_default_params(params=None):
     if not key:
         raise ValueError("Crypto.get_default_params: a key is required")
 
-    if type(key) == str:
+    if isinstance(key, str):
         key = base64.b64decode(key)
 
     cipher_params = CipherParams(algorithm=algorithm, secret_key=key, iv=iv, mode=mode)

pyproject.toml

@@ -43,9 +43,8 @@ vcdiff = ["vcdiff-decoder>=0.1.0,<0.2.0"]
 dev = [
   "pytest>=7.1,<8.0",
   "mock>=4.0.3,<5.0.0",
-  "pep8-naming>=0.4.1,<0.5.0",
   "pytest-cov>=2.4,<3.0",
-  "flake8>=3.9.2,<4.0.0",
+  "ruff>=0.14.0,<1.0.0",
   "pytest-xdist>=1.15,<2.0",
   "respx>=0.20.0,<0.21.0; python_version=='3.7'",
   "respx>=0.22.0,<0.23.0; python_version>='3.8'",
@@ -79,3 +78,20 @@ timeout = 30
 name = "experimental"
 url = "https://test.pypi.org/simple/"
 explicit = true
+
+[tool.ruff]
+line-length = 115
+extend-exclude = [
+  "ably/sync",
+  "test/ably/sync",
+]
+
+[tool.ruff.lint]
+# Enable Pyflakes (F), pycodestyle (E, W), and pep8-naming (N)
+select = ["E", "W", "F", "N"]
+ignore = [
+  "N818",  # exception name should end in 'Error'
+]
+
+[tool.ruff.lint.per-file-ignores]
+"__init__.py" = ["F401"]  # imported but unused

setup.cfg

@@ -1,14 +1,5 @@
 [coverage:run]
 branch=True
 
-[flake8]
-max-line-length = 115
-ignore = W503, W504, N818
-per-file-ignores =
-    # imported but unused
-    __init__.py: F401
-# Exclude virtual environment check
-exclude = .venv,venv,env,.env,.git,__pycache__,.pytest_cache,build,dist,*.egg-info,ably/sync,test/ably/sync
-
 [tool:pytest]
 #log_level = DEBUG

test/ably/rest/restchannelpublish_test.py

@@ -423,7 +423,7 @@ async def check_data():
                 async def check_history():
                     history = await channel.history()
                     message = history.items[0]
-                    return message.data == expected_value and type(message.data) == type_mapping[expected_type]
+                    return message.data == expected_value and isinstance(message.data, type_mapping[expected_type])
 
                 await assert_waiter(check_history)