Add flake8

.flake8

@@ -0,0 +1,7 @@
+[flake8]
+max-line-length = 120
+import-order-style = pycharm
+enable-extensions = G
+ignore =
+    W504, # line break occurred after a binary operator
+    C814  # missing trailing comma in Python 2 only

.github/workflows/flake8.yml

@@ -0,0 +1,18 @@
+name: flake8
+on: [push, pull_request]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up Python 3.8
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.8
+    - name: Install flake8
+      run: |
+        pip install flake8 flake8-import-order flake8-commas flake8-logging-format
+    - name: Run flake8
+      run: |
+        flake8 --version
+        flake8

nginx_krbauth.py

@@ -4,16 +4,13 @@ import hashlib
 import hmac
 import logging
 import os
-import time
-import socket
 import struct
-import sys
-from urllib.parse import quote
+import time
 
 import gssapi
 import ldap
-from flask import Flask, request, redirect, url_for, Response
-from gssapi.exceptions import GSSError, GeneralError, BadMechanismError
+from flask import Flask, Response, redirect, request
+from gssapi.exceptions import BadMechanismError, GSSError, GeneralError
 
 app = Flask(__name__)
 app.logger.setLevel(logging.INFO)