Run flake8 as part of Travis

.flake8

@@ -0,0 +1,3 @@
+[flake8]
+max-line-length = 100
+exclude = .git,src,build,doc/conf.py

.travis.yml

@@ -12,3 +12,4 @@ install:
   - pip install .
 script:
   - pytest --forked
+  - flake8

birdisle/__init__.py

@@ -4,7 +4,7 @@
 import os
 
 from . import _birdisle
-from ._version import __version__
+from ._version import __version__     # noqa: F401
 
 
 class Server(object):

builder.py

@@ -16,9 +16,8 @@
     void birdisleAddConnection(birdisleServer *handle, int fd);
 """)
 
-ffibuilder.set_source("birdisle._birdisle", """
-    #include "birdisle.h"
-""",
+ffibuilder.set_source(
+    "birdisle._birdisle", '#include "birdisle.h"\n',
     libraries=['birdisle'],
     include_dirs=['src/src'],
     library_dirs=['src/src'],

requirements.in

@@ -2,6 +2,7 @@ cffi
 redis
 pytest
 pytest-forked
+flake8
 
 aioredis; python_version>="3.5"
 pytest-asyncio; python_version>="3.5"

requirements.txt

@@ -10,14 +10,17 @@ async-timeout==2.0.1 ; python_version >= "3.5"
 atomicwrites==1.2.1       # via pytest
 attrs==18.2.0             # via pytest
 cffi==1.11.5
+flake8==3.5.0
 hiredis==0.2.0            # via aioredis
+mccabe==0.6.1             # via flake8
 more-itertools==4.3.0     # via pytest
-pathlib2==2.3.2           # via pytest
 pluggy==0.7.1             # via pytest
 py==1.7.0                 # via pytest
+pycodestyle==2.3.1        # via flake8
 pycparser==2.19           # via cffi
+pyflakes==1.6.0           # via flake8
 pytest-asyncio==0.9.0 ; python_version >= "3.5"
 pytest-forked==0.2
 pytest==3.8.2
 redis==2.10.6
-six==1.11.0               # via more-itertools, pathlib2, pytest
+six==1.11.0               # via more-itertools, pytest

tests/conftest.py

@@ -4,4 +4,3 @@
 collect_ignore = []
 if sys.version_info < (3, 5):
     collect_ignore.append('test_aioredis.py')
-

tests/test_aioredis.py

@@ -69,6 +69,7 @@ async def test_create_redis(r):
     val = await r.get('hello')
     assert val == b'world'
 
+
 @pytest.mark.asyncio
 async def test_pubsub(redis_pool):
     res = await redis_pool.subscribe('chan')

tests/test_birdisle.py

@@ -1,7 +1,6 @@
 import time
 import threading
 import locale
-import socket
 import resource
 import signal