Add PEP8 check and fix related issues

- Add PEP8 section to tox.ini
- Add hacking to requirements to enforce OpenStack style requirements
- Fix formatting issues flagged by flake8 check
- Add copyright notices to all remaining files
- Update .gitignore file

Change-Id: I8133009ef5db8e98bb4aa00dbdd36d837eabe84f

.gitignore

@@ -52,3 +52,8 @@ coverage.xml
 # Sphinx documentation
 docs/_build/
 
+# IDE Project Files
+*.project
+*.pydev*
+*.idea
+

notification_utils/__init__.py

@@ -27,13 +27,13 @@ def now():
 
 def dt_to_decimal(utc):
     decimal.getcontext().prec = 30
-    return decimal.Decimal(str(calendar.timegm(utc.utctimetuple()))) + \
-           (decimal.Decimal(str(utc.microsecond)) /
-           decimal.Decimal("1000000.0"))
+    return (decimal.Decimal(str(calendar.timegm(utc.utctimetuple()))) +
+            (decimal.Decimal(str(utc.microsecond)) / decimal.Decimal(
+                "1000000.0")))
 
 
 def dt_from_decimal(dec):
-    if dec == None:
+    if dec is None:
         return "n/a"
     integer = int(dec)
     micro = (dec - decimal.Decimal(integer)) * decimal.Decimal(1000000)

requirements.txt

@@ -1 +1,2 @@
+hacking>=0.10.0,<0.11
 dateutils

tests/test_utils.py

@@ -1,3 +1,19 @@
+# Copyright (c) 2014 Dark Secret Software Inc.
+# Copyright (c) 2015 Rackspace
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 import datetime
 import decimal
 import unittest
@@ -35,7 +51,8 @@ class TestDatetimeToDecimal(unittest.TestCase):
 
     def test_decimal_to_datetime(self):
         expected_decimal = decimal.Decimal('1356093296.123')
-        expected_datetime = datetime.datetime.utcfromtimestamp(expected_decimal)
+        expected_datetime = datetime.datetime.utcfromtimestamp(
+            expected_decimal)
         actual_datetime = notification_utils.dt_from_decimal(expected_decimal)
         self.assertEqual(actual_datetime, expected_datetime)
 

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py26, py27
+envlist = py26, py27, pep8
 
 [testenv]
 deps = 
@@ -12,3 +12,12 @@ commands =
    nosetests tests 
 
 sitepackages = False
+
+[testenv:pep8]
+commands =
+    flake8
+
+[flake8]
+ignore =
+exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,*db/__init__.py,*db/migrations/versions/*_.py
+show-source = True