diff --git a/resource_management/routes/interfaces.py b/resource_management/routes/interfaces.py
index ca15f20d7de0cd47e7f560ce4d632057a477d6ae..8a480c3b49c2d63a5bd8b618281d4efde9999492 100644
--- a/resource_management/routes/interfaces.py
+++ b/resource_management/routes/interfaces.py
@@ -54,6 +54,7 @@ async def load_router_interfaces(fqdn: str) -> InterfacesSummary:
         }
     }
 
+
 @router.post('/next-lag/{fqdn}')
 async def reserve_next_lag(fqdn: str) -> NextLAG:
     """
@@ -86,7 +87,8 @@ async def reserve_next_lag(fqdn: str) -> NextLAG:
 
 
 @router.post('/next-physical/{fqdn}/{lag_name}')
-async def reserve_physical_bundle_member(fqdn: str, lag_name: str) -> NextPhysicalInterface:
+async def reserve_physical_bundle_member(
+        fqdn: str, lag_name: str) -> NextPhysicalInterface:
     """
     compute the next available lag name for the given router
 
diff --git a/test/conftest.py b/test/conftest.py
index 5090be14184b7080fbea743b8f7edbf5a605d338..07d1714ac144a4298437e6d46860ab3e8117af0f 100644
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -12,7 +12,6 @@ from ncclient.manager import Manager, make_device_handler
 from ncclient.transport import SSHSession
 from ncclient.xml_ import NCElement
 
-import httpx
 from fastapi.testclient import TestClient
 
 from resource_management.db import model
@@ -76,8 +75,6 @@ HOSTNAMES = [
 ]
 
 
-
-
 @pytest.fixture
 def resources_db():
 
@@ -109,6 +106,7 @@ class _namespace(object):
 def pytest_generate_tests(metafunc):
     metafunc.parametrize("router_name", HOSTNAMES)
 
+
 @pytest.fixture
 def config_data(router_name):
     return {
@@ -196,7 +194,6 @@ def mocked_router(netconf_rpc_replies):
                 yield  # wait here until parent context ends
 
 
-
 @pytest.fixture
 def client(config_file):
     app = resource_management.create_app()
diff --git a/test/test_interfaces_routes.py b/test/test_interfaces_routes.py
index 4b5ece456010c0c419c3c040815323f6d03cb2af..6ffc443aae121e94605d38562f41f650d7fc8a76 100644
--- a/test/test_interfaces_routes.py
+++ b/test/test_interfaces_routes.py
@@ -16,7 +16,8 @@ def test_version_request(client):
     jsonschema.validate(rv.json(), Version.schema())
 
 
-def test_update_router_interfaces(client, resources_db, mocked_router, router_name):
+def test_update_router_interfaces(
+        client, resources_db, mocked_router, router_name):
     rv = client.post(f'/api/interfaces/import/{router_name}')
     assert rv.status_code == 200
     jsonschema.validate(rv.json(), interfaces.InterfacesSummary.schema())
diff --git a/test/test_parse_router.py b/test/test_parse_router.py
index 3aac49487eaab71f036efa7d264c327a910c5aa0..e6723d5f454de67d3a1b29c8d25266b17725ae41 100644
--- a/test/test_parse_router.py
+++ b/test/test_parse_router.py
@@ -7,6 +7,7 @@ from resource_management import router_interfaces, juniper
 from resource_management import db
 from resource_management.db import model
 
+
 def _remove_ns(xml):
     # cf. https://stackoverflow.com/a/51972010
     doc = etree.fromstring(xml)
@@ -76,7 +77,8 @@ def test_no_db_load_interfaces(mocked_router):
         assert aggregates
 
 
-def test_load_interfaces(mocked_router, resources_db, config_file, router_name):
+def test_load_interfaces(
+        mocked_router, resources_db, config_file, router_name):
     """
     new design for this app: no chassis info for now
     """
@@ -88,5 +90,5 @@ def test_load_interfaces(mocked_router, resources_db, config_file, router_name):
         assert router
         assert router.physical
         assert router.lags
-        assert all(l.physical for l in router.lags)
-        assert any(p.logical for p in router.physical)
+        assert all(_l.physical for _l in router.lags)
+        assert any(_p.logical for _p in router.physical)