Configure flake8 and nox

.gitignore

@@ -1,2 +1,3 @@
 __pycache__/
 *.egg-info/
+.nox/

CHANGELOG.md

@@ -10,6 +10,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix buildbot version in upgraded platforms ([#32](../../pull/32))
 - Fix missing m4 dependencies in Python CLI output ([#33](../../pull/33))
 
+### Added
+- Configure flake8 and nox ([#34](../../pull/34))
+
 ## [2.4.1-1] - 2019-09-20
 ### Added
 - Upgrade to buildbot 2.4.1 ([#29](../../pull/29))

scripts/docker-buildbot-worker/.flake8

@@ -1,4 +1,5 @@
 [flake8]
 max-line-length = 80
-select = C,E,F,W,B,B950
+max-complexity = 10
+select = C,E,F,W,B,B9
 ignore = E203, E501, W503

scripts/docker-buildbot-worker/docker_buildbot_worker/core/images.py

@@ -18,6 +18,7 @@ class Image:
 
 def release_key(platform):
     """Return a key function to sort releases."""
+
     def key(release):
         if (platform, release) == ("opensuse", "42"):
             return (14,)

scripts/docker-buildbot-worker/noxfile.py

@@ -0,0 +1,21 @@
+import nox
+
+
+nox.options.sessions = ("lint",)
+
+locations = "noxfile.py", "docker_buildbot_worker"
+
+
+@nox.session(python="3.7")
+def black(session):
+    """Run black code formatter."""
+    session.install("black")
+    session.run("black", *locations)
+
+
+@nox.session(python="3.7")
+def lint(session):
+    """Lint using flake8."""
+    session.install("flake8", "flake8-bugbear", "flake8-import-order", "black")
+    session.run("black", "--check", *locations)
+    session.run("flake8", *locations)