Use ruff

.pre-commit-config.yaml

@@ -3,7 +3,7 @@
 
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.4.0
+    rev: f71fa2c1f9cf5cb705f73dffe4b21f7c61470ba9 # v4.4.0
     hooks:
       - id: trailing-whitespace
       - id: end-of-file-fixer
@@ -15,27 +15,21 @@ repos:
       - id: check-json
       - id: check-toml
       - id: check-added-large-files
-  - repo: https://github.com/psf/black
-    rev: 23.3.0
-    hooks:
-      - id: black
-  - repo: https://github.com/pycqa/flake8
-    rev: 6.0.0
-    hooks:
-      - id: flake8
-        pass_filenames: true
-  - repo: https://github.com/pycqa/isort
-    rev: 5.12.0
-    hooks:
-      - id: isort
-  - repo: https://github.com/asottile/pyupgrade
-    rev: v3.7.0
-    hooks:
-      - id: pyupgrade
-        args: [--py37-plus]
+
   - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v2.7.1
+    rev: 50c5478ed9e10bf360335449280cf2a67f4edb7a # v2.7.1
     hooks:
       - id: prettier
         files: \.(html|md|yml|yaml|toml)
         args: [--prose-wrap=preserve]
+
+  - repo: https://github.com/psf/black
+    rev: bf7a16254ec96b084a6caf3d435ec18f0f245cc7 # 23.3.0
+    hooks:
+      - id: black
+
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: 1ac904bbe451ef0b5a437d1d3b331a244c1f272c # v0.0.275
+    hooks:
+      - id: ruff
+        args: [--fix, --exit-non-zero-on-fix]

lazy_loader/__init__.py

@@ -66,7 +66,7 @@ def attach(package_name, submodules=None, submod_attrs=None):
         attr: mod for mod, attrs in submod_attrs.items() for attr in attrs
     }
 
-    __all__ = list(sorted(submodules | attr_to_modules.keys()))
+    __all__ = sorted(submodules | attr_to_modules.keys())
 
     def __getattr__(name):
         if name in submodules:

lazy_loader/tests/test_lazy_loader.py

@@ -15,14 +15,14 @@ def test_lazy_import_basics():
     # poor-mans pytest.raises for testing errors on attribute access
     try:
         anything_not_real.pi
-        assert False  # Should not get here
+        raise AssertionError()  # Should not get here
     except ModuleNotFoundError:
         pass
     assert isinstance(anything_not_real, lazy.DelayedImportErrorModule)
     # see if it changes for second access
     try:
         anything_not_real.pi
-        assert False  # Should not get here
+        raise AssertionError()  # Should not get here
     except ModuleNotFoundError:
         pass
 
@@ -56,7 +56,7 @@ def test_lazy_import_nonbuiltins():
     if isinstance(sp, lazy.DelayedImportErrorModule):
         try:
             sp.pi
-            assert False
+            raise AssertionError()
         except ModuleNotFoundError:
             pass
 

pyproject.toml

@@ -32,3 +32,20 @@ Source = "https://github.com/scientific-python/lazy_loader"
 
 [tool.flit.sdist]
 exclude = ["tests/*"]
+
+[tool.ruff]
+line-length = 88
+target-version = "py37"
+select = [
+    "C",
+    "E",
+    "F",
+    "W",
+    "B",
+    "I",
+    "UP",
+]
+ignore = ['B018']
+exclude = [
+  "lazy_loader/tests/fake_pkg/__init__.pyi",
+]