Enable Flake8 in the CI builds (#638)

Co-authored-by: Fil Maj <[email protected]>

Author: seratch

.flake8

@@ -0,0 +1,3 @@
+[flake8]
+max-line-length = 125
+ignore = F841,F821,W503,E402

.github/workflows/flake8.yml

@@ -0,0 +1,23 @@
+name: Run flake8 validation
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    strategy:
+      matrix:
+        python-version: ['3.9']
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Run flake8 verification
+      run: |
+        ./scripts/run_flake8.sh

examples/django/myslackapp/urls.py

@@ -13,7 +13,7 @@
     1. Import the include() function: from django.urls import include, path
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
-from django.contrib import admin
+from django.contrib import admin  # noqa: F401
 from django.urls import path
 
 # Set this flag to False if you want to enable oauth_app instead

examples/django/simple_app/models.py

@@ -1,3 +1,3 @@
-from django.db import models
+from django.db import models  # noqa: F401
 
 # Create your models here.

examples/getting_started/app.py

@@ -7,6 +7,7 @@
     signing_secret=os.environ.get("SLACK_SIGNING_SECRET"),
 )
 
+
 # Listens to incoming messages that contain "hello"
 # To learn available listener method arguments,
 # visit https://slack.dev/bolt-python/api-docs/slack_bolt/kwargs_injection/args.html

examples/google_cloud_functions/main.py

@@ -26,6 +26,7 @@ def event_test(body, say, logger):
 
 handler = SlackRequestHandler(app)
 
+
 # Cloud Function
 def hello_bolt_app(request):
     """HTTP Cloud Function.

examples/workflow_steps/async_steps_from_apps.py

@@ -28,7 +28,7 @@ async def edit(ack: AsyncAck, step: dict, configure: AsyncConfigure):
                 "block_id": "intro-section",
                 "text": {
                     "type": "plain_text",
-                    "text": "Create a task in one of the listed projects. The link to the task and other details will be available as variable data in later steps.",
+                    "text": "Create a task in one of the listed projects. The link to the task and other details will be available as variable data in later steps.",  # noqa: E501
                 },
             },
             {
@@ -155,8 +155,8 @@ async def execute(
                 "blocks": blocks,
             },
         )
-    except:
-        await fail(error={"message": "Something wrong!"})
+    except Exception as e:
+        await fail(error={"message": f"Something wrong! (error: {e})"})
 
 
 app.step(

examples/workflow_steps/async_steps_from_apps_decorator.py

@@ -33,7 +33,7 @@ async def edit(ack: AsyncAck, step: dict, configure: AsyncConfigure):
                 "block_id": "intro-section",
                 "text": {
                     "type": "plain_text",
-                    "text": "Create a task in one of the listed projects. The link to the task and other details will be available as variable data in later steps.",
+                    "text": "Create a task in one of the listed projects. The link to the task and other details will be available as variable data in later steps.",  # noqa: E501
                 },
             },
             {

examples/workflow_steps/async_steps_from_apps_primitive.py

@@ -27,7 +27,7 @@ async def edit(body: dict, ack: AsyncAck, client: AsyncWebClient):
                     "block_id": "intro-section",
                     "text": {
                         "type": "plain_text",
-                        "text": "Create a task in one of the listed projects. The link to the task and other details will be available as variable data in later steps.",
+                        "text": "Create a task in one of the listed projects. The link to the task and other details will be available as variable data in later steps.",  # noqa: E501
                     },
                 },
                 {

examples/workflow_steps/steps_from_apps.py

@@ -31,7 +31,7 @@ def edit(ack: Ack, step, configure: Configure):
                 "block_id": "intro-section",
                 "text": {
                     "type": "plain_text",
-                    "text": "Create a task in one of the listed projects. The link to the task and other details will be available as variable data in later steps.",
+                    "text": "Create a task in one of the listed projects. The link to the task and other details will be available as variable data in later steps.",  # noqa: E501
                 },
             },
             {