black style tweaks: add trailing commas

base-notebook/test/test_python.py

@@ -10,7 +10,10 @@ LOGGER = logging.getLogger(__name__)
 def test_python_version(container, python_next_version="3.10"):
     """Check that python version is lower than the next version"""
     LOGGER.info(f"Checking that python version is lower than {python_next_version}")
-    c = container.run(tty=True, command=["start.sh"])
+    c = container.run(
+        tty=True,
+        command=["start.sh"],
+    )
     cmd = c.exec_run("python --version")
     output = cmd.output.decode("utf-8")
     actual_python_version = version.parse(output.split()[1])