Always run flake8 through pre-commit, and with doctests (#28490)

* Enable flake8 doctests everywhere

* Always run flake8 through pre-commit

.vscode/tasks.json

@@ -33,7 +33,7 @@
     {
       "label": "Flake8",
       "type": "shell",
-      "command": "flake8 homeassistant tests",
+      "command": "pre-commit run flake8 --all-files",
       "group": {
         "kind": "test",
         "isDefault": true

script/lazytox.py

@@ -120,7 +120,7 @@ async def pylint(files):
 
 async def flake8(files):
     """Exec flake8."""
-    _, log = await async_exec("flake8", "--doctests", *files)
+    _, log = await async_exec("pre-commit", "run", "flake8", "--files", *files)
     res = []
     for line in log.splitlines():
         line = line.split(":")

script/lint

@@ -15,7 +15,7 @@ printf "%s\n" $files
 echo "================"
 echo "LINT with flake8"
 echo "================"
-flake8 --doctests $files
+pre-commit run flake8 --files $files
 echo "================"
 echo "LINT with pylint"
 echo "================"

setup.cfg

@@ -21,6 +21,7 @@ norecursedirs = .git testing_config
 
 [flake8]
 exclude = .venv,.git,.tox,docs,venv,bin,lib,deps,build
+doctests = True
 # To work with Black
 max-line-length = 88
 # E501: line too long