Lint codebase and add CI job

.gitlab-ci.yml

 stages:
+  - lint
   - test
   - build
   - publish
 
+lint:
+  stage: lint
+  image: python:3.10
+  before_script:
+    - pip install .[lint]
+  script:
+    - black .
+  tags:
+    - docker
+
 test:
   stage: test
   image: python:3

mopidy_funkwhale/client.py

@@ -78,7 +78,9 @@ class APIClient(object):
         )
         self.session.verify = config["funkwhale"].get("verify_cert", True)
 
-        self.exclude_compilation_artists = self.config["funkwhale"].get("exclude_compilation_artists", True)
+        self.exclude_compilation_artists = self.config["funkwhale"].get(
+            "exclude_compilation_artists", True
+        )
 
     @property
     def use_oauth(self):
@@ -151,7 +153,9 @@ def get_token(config):
         return None
     try:
         token_data = json.loads(raw)
-        token_data["expires_in"] = token_data["expires_at"] - datetime.timestamp(datetime.now())
+        token_data["expires_in"] = token_data["expires_at"] - datetime.timestamp(
+            datetime.now()
+        )
         return token_data
     except (TypeError, ValueError):
         logger.error("Cannot decode token data, you may need to relogin")

mopidy_funkwhale/library.py

@@ -293,7 +293,7 @@ class FunkwhaleLibraryProvider(backend.LibraryProvider):
         logger.debug("Handling libraries route: %s", remaining)
 
         payload = self.backend.client.list_libraries(
-             {"ordering": "name", "page_size": 50}
+            {"ordering": "name", "page_size": 50}
         )
         uri_prefix = "funkwhale:directory:artists:by-library"
         libraries = [
@@ -378,7 +378,9 @@ class FunkwhaleLibraryProvider(backend.LibraryProvider):
         client = self.backend.client
         config = {
             "track": lambda id: [client.get_track(id)],
-            "album": lambda id: client.list_tracks({"album": id, "ordering": "position"})["results"],
+            "album": lambda id: client.list_tracks(
+                {"album": id, "ordering": "position"}
+            )["results"],
             "artist": lambda id: client.list_tracks({"artist": id})["results"],
         }
 

setup.cfg

@@ -28,6 +28,9 @@ mopidy.ext =
     funkwhale = mopidy_funkwhale:Extension
 
 [options.extras_require]
+lint =
+    black
+
 test =
     pytest
     pytest-cov

setup.py

@@ -4,24 +4,27 @@ import codecs
 import os
 from setuptools import setup
 
+
 def read(rel_path):
     here = os.path.abspath(os.path.dirname(__file__))
-    with codecs.open(os.path.join(here, rel_path), 'r') as fp:
+    with codecs.open(os.path.join(here, rel_path), "r") as fp:
         return fp.read()
 
+
 def get_version():
-    tag = os.getenv('CI_COMMIT_TAG', None)
+    tag = os.getenv("CI_COMMIT_TAG", None)
     if tag:
         return tag
 
     for line in read("mopidy_funkwhale/__init__.py").splitlines():
-        if line.startswith('__version__'):
+        if line.startswith("__version__"):
             delim = '"' if '"' in line else "'"
             version = line.split(delim)[1]
-            iid = os.getenv('CI_PIPELINE_IID', 0)
+            iid = os.getenv("CI_PIPELINE_IID", 0)
             return "{}.dev{}".format(version, iid)
     raise RuntimeError("Unable to find version string.")
 
+
 setup(
     version=get_version(),
 )