Add python 3.7 support

Add Python 3.7 to the tests. Note that Travis requires a workaround for
now.

Document 3.7 support on PyPi.

.travis.yml

@@ -5,8 +5,21 @@ python:
     - 3.4
     - 3.5
     - 3.6
+    # - 3.7  # TODO uncomment once Travis supports 3.7 w/o the `matrix` workaround used below
     - pypy
 
+# TODO: workaround pulled from:
+# https://github.com/travis-ci/travis-ci/issues/9815#issue-336465122
+# It only runs a single 3.7 test job against one version of Kafka but
+# that's good enough for now since we test all the other permutations,
+# especially since this workaround should be removed in the near future.
+# Enable 3.7 without globally enabling sudo and dist: xenial for other build jobs
+matrix:
+  include:
+    - python: 3.7
+      dist: xenial
+      sudo: true
+
 env:
     - KAFKA_VERSION=0.8.2.2
     - KAFKA_VERSION=0.9.0.1

Makefile

@@ -14,8 +14,8 @@ servers/$(KAFKA_VERSION)/kafka-bin:
 build-integration: servers/$(KAFKA_VERSION)/kafka-bin
 
 # Test and produce coverage using tox. This is the same as is run on Travis
-test36: build-integration
-	KAFKA_VERSION=$(KAFKA_VERSION) SCALA_VERSION=$(SCALA_VERSION) tox -e py36 -- $(FLAGS)
+test37: build-integration
+	KAFKA_VERSION=$(KAFKA_VERSION) SCALA_VERSION=$(SCALA_VERSION) tox -e py37 -- $(FLAGS)
 
 test27: build-integration
 	KAFKA_VERSION=$(KAFKA_VERSION) SCALA_VERSION=$(SCALA_VERSION) tox -e py27 -- $(FLAGS)
@@ -56,4 +56,4 @@ doc:
 	make -C docs html
 	@echo "open file://`pwd`/docs/_build/html/index.html"
 
-.PHONY: all test36 test27 test-local cov-local clean doc
+.PHONY: all test37 test27 test-local cov-local clean doc

docs/compatibility.rst

@@ -9,6 +9,6 @@ Compatibility
 kafka-python is compatible with (and tested against) broker versions 1.0
 through 0.8.0 . kafka-python is not compatible with the 0.8.2-beta release.
 
-kafka-python is tested on python 2.7, 3.4, 3.5, 3.6 and pypy.
+kafka-python is tested on python 2.7, 3.4, 3.5, 3.6, 3.7 and pypy.
 
 Builds and tests via Travis-CI.  See https://travis-ci.org/dpkp/kafka-python

setup.py

@@ -57,6 +57,7 @@ def run(cls):
         "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: Implementation :: PyPy",
         "Topic :: Software Development :: Libraries :: Python Modules",
     ]

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{26,27,34,35,36,py}, docs
+envlist = py{26,27,34,35,36,37,py}, docs
 
 [pytest]
 testpaths = kafka test
@@ -11,8 +11,8 @@ log_format = %(created)f %(filename)-23s %(threadName)s %(message)s
 deps =
     pytest
     pytest-cov
-    py{27,34,35,36,py}: pylint
-    py{27,34,35,36,py}: pytest-pylint
+    py{27,34,35,36,37,py}: pylint
+    py{27,34,35,36,37,py}: pytest-pylint
     pytest-mock
     mock
     python-snappy