chore(ci): add isort and flake8-quotes linters

.travis.yml

@@ -8,7 +8,7 @@ python:
   - "nightly"
 matrix:
   include:
-    - { python: "3.6", env: TOXENV=flake8 }
+    - { python: "3.6", env: TOXENV=lint }
   allow_failures:
     - python: "3.6-dev"
     - python: "3.7-dev"

CONTRIBUTING.md

@@ -15,6 +15,7 @@ open an issue and let someone else do that work.
 ### Pull Requests
 
 * Make sure any code changes are covered by tests.
+* Run [isort] on any modified files.
 * If this is your first contribution, add yourself to the [CONTRIBUTORS] file.
 * If your branch is behind master, [rebase] on top of it.
 
@@ -25,6 +26,7 @@ Run the test suite with `tox`.  The tests require running [RabbitMQ],
 [RabbitMQ]: https://www.rabbitmq.com/
 [Redis]: https://redis.io
 [Memcached]: https://memcached.org/
+[isort]: https://github.com/timothycrosley/isort
 [rebase]: https://github.com/edx/edx-platform/wiki/How-to-Rebase-a-Pull-Request
 
 

requirements/dev.txt

@@ -1,4 +1,7 @@
+flake8
+flake8-quotes
 hiredis  # Not included in the base distro because of PyPy
+isort
 twine
 
 -r common.txt

setup.cfg

@@ -8,4 +8,11 @@ max-line-length = 120
 [flake8]
 ignore = E402,F403,F811
 max-complexity = 20
-max-line-length = 120
+max-line-length = 120
+
+inline-quotes = "
+multiline-quotes = """
+
+[isort]
+known_first_party=dramatiq
+multi_line_output=5

tox.ini

@@ -3,13 +3,15 @@ envlist=
   py{35,36,37}-cpython
   pypy3-pypy
   benchmarks
-  flake8
+  lint
 
 [testenv]
 deps=
   cpython: -r{toxinidir}/requirements/dev.txt
   pypy: -r{toxinidir}/requirements/dev-pypy.txt
-  flake8: flake8
+  lint: isort
+        flake8
+        flake8-quotes
 commands=
   py.test --benchmark-skip {posargs}
 passenv=
@@ -27,6 +29,7 @@ commands=
 install_command=
   pip install -U -c {toxinidir}/requirements/constraints.txt {opts} {packages}
 
-[testenv:flake8]
+[testenv:lint]
 commands=
   flake8 {toxinidir}/dramatiq {toxinidir}/examples {toxinidir}/tests
+  isort -rc -c {toxinidir}/dramatiq {toxinidir}/examples {toxinidir}/tests