Add [pre-commit](pre-commit.com) w/ Black applied

Author: finchd

.ebextensions/application.config

@@ -1,3 +1,3 @@
 option_settings:
   aws:elasticbeanstalk:container:python:
-    WSGIPath: helloworld/application.py
+    WSGIPath: helloworld/application.py

.pre-commit-config.yaml

@@ -0,0 +1,18 @@
+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v2.4.0
+    hooks:
+    -   id: trailing-whitespace
+    -   id: end-of-file-fixer
+    -   id: check-yaml
+    -   id: check-added-large-files
+-   repo: https://github.com/psf/black
+    rev: 19.10b0
+    hooks:
+    -   id: black
+-   repo: https://github.com/awslabs/git-secrets
+    rev: HEAD
+    hooks:
+    -   id: git-secrets

.travis.yml

@@ -10,7 +10,7 @@ matrix:
     - python: 3.7
       dist: xenial
       sudo: true
-install: 
+install:
   - "pip install -r requirements.txt"
-script: 
+script:
   - "python setup.py pytest"

helloworld/application.py

@@ -5,13 +5,20 @@
 
 application = Flask(__name__)
 
-@application.route('/', methods=['GET'])
+
+@application.route("/", methods=["GET"])
 def get():
-    return Response(json.dumps({'Output': 'Hello World'}), mimetype='application/json', status=200)
+    return Response(
+        json.dumps({"Output": "Hello World"}), mimetype="application/json", status=200
+    )
+
 
-@application.route('/', methods=['POST'])
+@application.route("/", methods=["POST"])
 def post():
-    return Response(json.dumps({'Output': 'Hello World'}), mimetype='application/json', status=200)
+    return Response(
+        json.dumps({"Output": "Hello World"}), mimetype="application/json", status=200
+    )
+
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     flaskrun(application)

helloworld/flaskrun.py

@@ -9,22 +9,14 @@ def flaskrun(app, default_host="0.0.0.0", default_port="80"):
 
     # Set up the command-line options
     parser = optparse.OptionParser()
-    msg = 'Hostname of Flask app [{}]'.format(default_host)
-    parser.add_option("-H", "--host",
-                      help=msg,
-                      default=default_host)
-    msg = 'Port for Flask app [{}]'.format(default_port)
-    parser.add_option("-P", "--port",
-                      help=msg,
-                      default=default_port)
-    parser.add_option("-d", "--debug",
-                      action="store_true", dest="debug",
-                      help=optparse.SUPPRESS_HELP)
+    msg = "Hostname of Flask app [{}]".format(default_host)
+    parser.add_option("-H", "--host", help=msg, default=default_host)
+    msg = "Port for Flask app [{}]".format(default_port)
+    parser.add_option("-P", "--port", help=msg, default=default_port)
+    parser.add_option(
+        "-d", "--debug", action="store_true", dest="debug", help=optparse.SUPPRESS_HELP
+    )
 
     options, _ = parser.parse_args()
 
-    app.run(
-        debug=options.debug,
-        host=options.host,
-        port=int(options.port)
-    )
+    app.run(debug=options.debug, host=options.host, port=int(options.port))

requirements.txt

@@ -4,4 +4,4 @@ itsdangerous==1.1.0
 Jinja2==2.10.3
 MarkupSafe==1.1.1
 virtualenv==20.0.25
-Werkzeug==0.16.0
+Werkzeug==0.16.0

setup.py

@@ -1,16 +1,10 @@
 from setuptools import setup, find_packages
 
 setup(
-    name='helloworld',
+    name="helloworld",
     packages=find_packages(),
     include_package_data=True,
-    install_requires=[
-        'flask',
-    ],
-    setup_requires=[
-        'pytest-runner',
-    ],
-    tests_require=[
-        'pytest',
-    ],
+    install_requires=["flask",],
+    setup_requires=["pytest-runner",],
+    tests_require=["pytest",],
 )

tests/test_application.py

@@ -2,13 +2,15 @@
 import pytest
 from helloworld.application import application
 
+
 @pytest.fixture
 def client():
     return application.test_client()
 
+
 def test_response(client):
     result = client.get()
     response_body = json.loads(result.get_data())
     assert result.status_code == 200
-    assert result.headers['Content-Type'] == 'application/json'
-    assert response_body['Output'] == 'Hello World'
+    assert result.headers["Content-Type"] == "application/json"
+    assert response_body["Output"] == "Hello World"