Add pre-commit checks

.pre-commit-config.yaml

@@ -1 +1,36 @@
-repos: []
+# To enable this pre-commit hook run:
+# `pip install pre-commit` or `brew install pre-commit`
+# Then run `pre-commit install`
+
+# Learn more about this config here: https://pre-commit.com
+
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.5.0
+    hooks:
+      - id: check-toml
+      - id: check-yaml
+      - id: detect-private-key
+      - id: end-of-file-fixer
+      - id: mixed-line-ending
+      - id: requirements-txt-fixer
+
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.1.6
+    hooks:
+      - id: ruff
+
+
+  - repo: https://github.com/codespell-project/codespell
+    rev: v2.2.6
+    hooks:
+      - id: codespell
+        additional_dependencies:
+          - tomli
+        args:
+          [--skip, "*.po"]
+
+  - repo: https://github.com/abravalheri/validate-pyproject
+    rev: v0.15
+    hooks:
+      - id: validate-pyproject

pyproject.toml

@@ -63,4 +63,3 @@ include_trailing_comma = true
 known_first_party = ["formtools"]
 line_length = 79
 multi_line_output = 5
-

tests/wizard/test_forms.py

@@ -88,7 +88,7 @@ class TestWizardWithInitAttrs(TestWizard):
 
 class TestWizardWithTypeCheck(TestWizard):
     def done(self, form_list, **kwargs):
-        assert type(form_list) is list, "`form_list` was {}, should be a list".format(type(form_list))
+        assert isinstance(form_list, list), f"`form_list` was {type(form_list)}, should be a list"
         return http.HttpResponse("All good")