Add lint test

.travis.yml

@@ -9,6 +9,7 @@ install:
   - pip install -r requirements.txt
 
 script:
+  - make test
   - make clean && make
 
 sudo: false

Makefile

@@ -1,7 +1,10 @@
 REQUIREMENT = requirements.txt
 
-.PHONY: build
+.PHONY: build test
 build: html
 
 %:
 	cd docs && make $@
+
+test:
+	flake8 app.py

app.py

@@ -3,12 +3,13 @@
 """
 import os
 
-from flask import Flask, send_from_directory
+from flask import Flask, abort, send_from_directory
 from flask_sslify import SSLify
 
 DIR = os.path.dirname(os.path.realpath(__file__))
 ROOT = os.path.join(DIR, 'docs', '_build', 'html')
 
+
 def find_key(token):
     if token == os.environ.get("ACME_TOKEN"):
         return os.environ.get("ACME_KEY")
@@ -39,7 +40,8 @@ def index_redirection():
 @app.route("/.well-known/acme-challenge/<token>")
 def acme(token):
     key = find_key(token)
-    if key is None: abort(404)
+    if key is None:
+        abort(404)
     return key
 
 

requirements.txt

@@ -17,3 +17,4 @@ snowballstemmer==1.2.1
 Sphinx==1.6.3
 sphinx-rtd-theme==0.2.4
 Werkzeug==0.12.2
+flake8==3.4.1