flake8 configuration + fixes + tests

.travis.yml

@@ -1,8 +1,10 @@
 language: python
 install:
+  - pip install flake8
   - pip install coveralls coverage
   - pip install -q "$DJANGO"
 before_script:
+  - flake8
   - python setup.py install
 script:
   - coverage run manage.py test

setup.cfg

@@ -0,0 +1,4 @@
+[flake8]
+max-line-length = 180
+exclude = env/*,*/migrations/*,*/static/*
+max-complexity = 10

tests/test.py

@@ -2,6 +2,7 @@
 from django.test import TestCase
 from django.core.exceptions import ValidationError
 
+
 class DjangoGpxPyTests(TestCase):
     def test_gpx_parsing(self):
         """
@@ -17,4 +18,4 @@ def test_bad_file_parsing(self):
         """
         with self.assertRaises(ValidationError):
             with open("tests/test_data/test_bad_file.gpx", "r") as f:
-                multilinestring = parse_gpx(f)
+                parse_gpx(f)