test on py3.7 through 3.9 (#726)

* test on py38

* add 3.8 classifier

* upgrade flake8

and add a few ignores

* upgrade pylint

* upgrade coverage

* add one required pragma

* add py39 (and py37)

* forgot to update pins in tox.ini

* raise eventlet pin

* py38 and py29 require eventlet>=0.25.0

* add environment markers to encode the eventlet reqs

* 3.7 requires eventlet>=0.25.0 also

* add missing classifiers

.github/workflows/ci.yaml

@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - 3.6
+          - 3.9
           - 2.7
 
     steps:
@@ -44,7 +44,7 @@ jobs:
     strategy:
       matrix:
         python-version:
-          - 3.6
+          - 3.9
           - 2.7
     steps:
     - name: checkout
@@ -76,6 +76,9 @@ jobs:
     strategy:
       matrix:
         python-version:
+          - 3.9
+          - 3.8
+          - 3.7
           - 3.6
           - 2.7
         dependency-set:

Makefile

@@ -20,7 +20,7 @@ imports:
 	isort -rc $(autofix) nameko test
 
 test_lib:
-	BRANCH=$(ENABLE_BRANCH_COVERAGE) coverage run -m pytest test --strict --timeout 30
+	BRANCH=$(ENABLE_BRANCH_COVERAGE) coverage run -m pytest test -v --strict --timeout 30
 	BRANCH=$(ENABLE_BRANCH_COVERAGE) coverage report
 
 test_examples:

nameko/cli/run.py

@@ -155,7 +155,7 @@ def shutdown(signum, frame):
                 service_runner.kill()
         else:
             # runner.wait completed
-            break
+            break  # pragma: no cover (coverage problem on py39)
 
 
 def main(args):

nameko/standalone/rpc.py

@@ -161,7 +161,7 @@ def get_message(self, correlation_id):
             # fires the connection is closed and must be re-established
             self._setup_consumer()
 
-        except (IOError, ConnectionError) as exc:
+        except (IOError, ConnectionError):
             # in case this was a temporary error, attempt to reconnect
             # and try again. if we fail to reconnect, the error will bubble
             self._setup_consumer()

nameko/testing/pytest.py

@@ -115,7 +115,11 @@ def rabbit_manager(request):
 
 @pytest.yield_fixture(scope='session')
 def vhost_pipeline(request, rabbit_manager):
-    from collections import Iterable
+    try:
+        from collections.abc import Iterable
+    except ImportError:  # pragma: no cover
+        # py2 compatibility
+        from collections import Iterable  # pylint: disable=E0611
     from six.moves.urllib.parse import urlparse  # pylint: disable=E0401
     import random
     import socket

setup.cfg

@@ -2,7 +2,7 @@
 universal = 1
 
 [flake8]
-ignore =
+ignore = E402, E722, W504
 max-line-length = 88
 exclude = test/nameko_doc/example/*
 

setup.py

@@ -23,6 +23,8 @@
     install_requires=[
         "dnspython<2",
         "eventlet>=0.20.1",
+        "eventlet>=0.21.0 ; python_version>='3.6'",
+        "eventlet>=0.25.0 ; python_version>='3.7'",
         "kombu>=4.2.0,<5",
         "mock>=1.2",
         "path.py>=6.2",
@@ -35,14 +37,11 @@
     ],
     extras_require={
         'dev': [
-            "astroid==1.6.5",
-            "coverage==4.5.1",
-            "flake8==3.3.0",
+            "coverage==5.5",
+            "flake8==3.9.2",
             "isort==4.2.15",
-            "mccabe==0.6.1",
-            "pycodestyle==2.3.1",
-            "pyflakes==1.5.0",
-            "pylint==1.7.1",
+            "pylint==1.9.5 ; python_version<'3'",
+            "pylint==2.11.1 ; python_version>'3'",
             "pytest==4.3.1",
             "pytest-cov==2.5.1",
             "pytest-timeout==1.3.3",
@@ -83,6 +82,9 @@
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: 3.7",
+        "Programming Language :: Python :: 3.8",
+        "Programming Language :: Python :: 3.9",
         "Topic :: Internet",
         "Topic :: Software Development :: Libraries :: Python Modules",
         "Intended Audience :: Developers",

tox.ini

@@ -1,12 +1,13 @@
 [tox]
-envlist = {py2.7,py3.5,py3.6}-{oldest,pinned,latest,extra}-test, {py2.7,py3.5,py3.6}-latest-test-mastereventlet, py3.6-latest-test-branchcoverage, {py2.7,py3.6}-examples, docs, {py2.7,py3.6}-static
+envlist = {py2.7,py3.5,py3.6,py3.7,py3.8,py3.9}-{oldest,pinned,latest,extra}-test, {py2.7,py3.5,py3.6}-latest-test-mastereventlet, py3.6-latest-test-branchcoverage, {py2.7,py3.9}-examples, docs, {py2.7,py3.9}-static
 skipsdist = True
 
 [testenv]
 deps =
     # oldest supported libraries for each python
     {py2.7,py3.5}-oldest: eventlet==0.20.1
-    py3.6-oldest: eventlet==0.21.0
+    {py3.6}-oldest: eventlet==0.21.0
+    {py3.7,py3.8,py3.9}-oldest: eventlet==0.25.0
     oldest: kombu==4.2.0
     oldest: mock==1.2.0
     oldest: path.py==6.2
@@ -16,7 +17,7 @@ deps =
     oldest: wrapt==1.0.0
 
     # pinned library versions
-    {py3.5,py3.6}-{pinned,extra}: eventlet==0.23.0
+    {py3.5,py3.6,py3.7}-{pinned,extra}: eventlet==0.26.0
     pinned: kombu==4.2.1
     pinned: mock==2.0.0
     pinned: path.py==11.0.1
@@ -25,7 +26,7 @@ deps =
     pinned: werkzeug==1.0.1
     pinned: wrapt==1.10.11
 
-    {py3.5,py3.6}-extra: regex==2018.07.11
+    {py3.5,py3.6,py3.7,py3.8,py3.9}-extra: regex==2018.07.11
 
 
 setenv =