Fix flake8

.eslintrc

@@ -0,0 +1,56 @@
+{
+  "env": {
+    "browser": true,
+    "es6": true,
+    "jquery": true
+  },
+  "extends": [
+    "eslint:recommended"
+  ],
+  "ignorePatterns": ["dist/", "node_modules/"],
+  "rules": {
+    "block-scoped-var": "error",
+    "consistent-return": "error",
+    "curly": "error",
+    "default-case": "error",
+    "default-param-last": ["error"],
+    "dot-notation": "error",
+    "eqeqeq": "error",
+    "guard-for-in": "error",
+    "max-classes-per-file": "error",
+    "no-alert": "error",
+    "no-caller": "error",
+    "no-else-return": "error",
+    "no-empty-function": "error",
+    "no-floating-decimal": "error",
+    "no-implicit-coercion": "error",
+    "no-implicit-globals": "error",
+    "no-multi-spaces": "error",
+    "no-multi-str": "error",
+    "no-param-reassign": "error",
+    "no-return-assign": "error",
+    "no-return-await": "error",
+    "no-self-compare": "error",
+    "no-throw-literal": "error",
+    "no-useless-concat": "error",
+    "radix": ["error", "as-needed"],
+    "require-await": "error",
+    "yoda": "error",
+    "no-shadow": "off",
+    "prefer-destructuring": ["error", { "array": false, "object": true }],
+    "padding-line-between-statements": [
+      "error",
+      { "blankLine": "always", "prev": "import", "next": "export" },
+      { "blankLine": "always", "prev": "export", "next": "export" },
+      { "blankLine": "always", "prev": "*", "next": "return" }
+    ]
+  },
+  "parserOptions": {
+    "ecmaVersion": 6,
+    "sourceType": "script"
+  },
+  "globals": {
+    "bootstrap": false,
+    "moment": false
+  }
+}

.prettierrc

@@ -0,0 +1,5 @@
+{
+    "tabWidth": 4,
+    "printWidth": 120,
+    "endOfLine": "auto"
+}

pyproject.toml

@@ -46,3 +46,33 @@ python_files = [
     "test_*.py",
     "tests.py",
 ]
+
+
+###############################################################################
+# flake8 / flakeheaven
+###############################################################################
+[tool.flakeheaven]
+max_complexity = 10
+format = "grouped"
+
+# Base rules
+#############################
+[tool.flakeheaven.plugins]
+"*" = [
+    "+*",
+    "-E501", # long lines
+    "-E203", # conflict with black on PEP8 interpretation
+    "-W503",  # deprecated rule: https://www.flake8rules.com/rules/W503.html
+]
+flake8-docstrings = [
+    "+*",
+    "-D1??", # missing docstring
+]
+
+# Exceptions
+#############################
+[tool.flakeheaven.exceptions."**/tests/*"]
+flake8-bandit = [
+    "+*",
+    "-S101", # Use of assert detected.
+]

src/redirect/admin.py

@@ -42,7 +42,7 @@ class RedirectAdmin(admin.ModelAdmin):
     def link(self, instance: Redirect) -> str:
         url = instance.get_absolute_url()
         url = self.request.build_absolute_uri(url)
-        return mark_safe(f'<a href="{url}">link</a>')
+        return mark_safe(f'<a href="{url}">link</a>')  # noqa: S308, S703
 
 
 admin.site.register(RedirectUser, UserAdmin)

src/redirect/backends.py

@@ -1,4 +1,4 @@
-from django.contrib.auth.backends import BaseBackend, ModelBackend
+from django.contrib.auth.backends import ModelBackend
 from django.contrib.auth.models import AbstractUser
 
 from redirect.models import Redirect

src/shortener/urls.py

@@ -1,4 +1,4 @@
-"""shortener URL Configuration
+"""shortener URL Configuration.
 
 The `urlpatterns` list routes URLs to views. For more information please see:
     https://docs.djangoproject.com/en/3.2/topics/http/urls/