diff --git a/docs/source/conf.py b/docs/source/conf.py
index 990f58aa5b5a2b24776500d4a0f9142a7b05b2d1..f48683f27618c584dacca9bf31c72d140722ccf7 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -21,6 +21,7 @@ sys.path.insert(0, os.path.abspath(
         os.path.dirname(__file__),
         '..', '..', 'resource_management')))
 
+
 class RenderAsJSON(Directive):
     # cf. https://stackoverflow.com/a/59883833
 
@@ -65,8 +66,6 @@ extensions = [
 templates_path = ['_templates']
 exclude_patterns = []
 
-
-
 # -- Options for HTML output -------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output
 
@@ -81,4 +80,3 @@ autodoc_typehints = 'none'
 
 # Display todos by setting to True
 todo_include_todos = True
-
diff --git a/resource_management/__init__.py b/resource_management/__init__.py
index 8b137891791fe96927ad78e64b0aad7bded08bdc..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 100644
--- a/resource_management/__init__.py
+++ b/resource_management/__init__.py
@@ -1 +0,0 @@
-
diff --git a/resource_management/cli.py b/resource_management/cli.py
index d354107c876b97ae436f0ac9fae5639cad0bc153..85c4e9d493be0bda7891435a0df187d885754f99 100644
--- a/resource_management/cli.py
+++ b/resource_management/cli.py
@@ -31,7 +31,8 @@ import click
 import logging
 from jsonschema import validate, ValidationError
 
-from resource_management.hardware.router import load_line_cards, LINE_CARDS_LIST_SCHEMA
+from resource_management.hardware.router \
+    import load_line_cards, LINE_CARDS_LIST_SCHEMA
 from resource_management import db, config, environment
 
 environment.setup_logging()
@@ -97,10 +98,11 @@ def cli(config, fqdn):
     validate(line_cards, LINE_CARDS_LIST_SCHEMA)
 
     mysql_config = config["mysql"]
-    dsn = db.mysql_dsn(mysql_config["username"],
-                    mysql_config["password"],
-                    mysql_config["hostname"],
-                    mysql_config["dbname"])
+    dsn = db.mysql_dsn(
+        username=mysql_config["username"],
+        password=mysql_config["password"],
+        hostname=mysql_config["hostname"],
+        db_name=mysql_config["dbname"])
     logger.info("MYSQL DSN is: {0}".format(dsn))
 
     db.init_db_model(dsn)
diff --git a/resource_management/db/__init__.py b/resource_management/db/__init__.py
index b2c108a60f71b6cd0942994d46232cd0cb4d5f53..6b3d5f7d10462f13c5eaa4842e20972853b1e155 100644
--- a/resource_management/db/__init__.py
+++ b/resource_management/db/__init__.py
@@ -1,6 +1,6 @@
 import contextlib
 import logging
-from typing import Optional, Union, Callable, Iterator
+from typing import Union, Iterator
 
 from sqlalchemy import create_engine
 from sqlalchemy.exc import SQLAlchemyError
diff --git a/resource_management/hardware/router.py b/resource_management/hardware/router.py
index 13abe5725b56e4ff5851b9c4df8a12d140daed96..6be1a6332d2c250ad737dd0a7bd9986c3e18257f 100644
--- a/resource_management/hardware/router.py
+++ b/resource_management/hardware/router.py
@@ -25,7 +25,11 @@ LINE_CARDS_LIST_SCHEMA = {
             'items': {
                 'type': 'object',
                 'properties': {
-                    'name': {'type': 'string', 'pattern': '^[a-z]{2}\\-[0-9]{1,2}\\/[0-9]{1,2}\\/[0-9]{1,3}'},
+                    'name': {
+                        'type': 'string',
+                        'pattern':
+                            '^[a-z]{2}\\-[0-9]{1,2}\\/[0-9]{1,2}\\/[0-9]{1,3}'
+                    },
                     'speed': {'type': 'integer', 'minimum': 0}
                 },
                 'required': ['name', 'speed'],
@@ -48,6 +52,7 @@ LINE_CARDS_LIST_SCHEMA = {
     }
 }
 
+
 @contextlib.contextmanager
 def device(hostname, ssh_config, port=830):
 
diff --git a/resource_management/migrations/versions/cdbd931a47d4_add_speed_column_to_ports_table.py b/resource_management/migrations/versions/cdbd931a47d4_add_speed_column_to_ports_table.py
index 4baf5f829f1e936efcced302a9ecb40ff4999785..9fb3a4a216b75cfb37b053ddce4be00bc4ea864a 100644
--- a/resource_management/migrations/versions/cdbd931a47d4_add_speed_column_to_ports_table.py
+++ b/resource_management/migrations/versions/cdbd931a47d4_add_speed_column_to_ports_table.py
@@ -19,10 +19,10 @@ depends_on = None
 def upgrade() -> None:
     with op.batch_alter_table('ports') as batch_op:
         batch_op.add_column(
-            Column('speed', sa.Integer, nullable=False)),
+            sa.Column('speed', sa.Integer, nullable=False),
             insert_after='name'
         )
 
 
 def downgrade() -> None:
-    op.drop_column('ports','speed')
+    op.drop_column('ports', 'speed')
diff --git a/test/conftest.py b/test/conftest.py
index fb80882634988ffe8a9cd504ef9886cd478f18f6..4b697170a57cff71d6166b874777e969bfa3e36c 100644
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -10,6 +10,7 @@ from sqlalchemy.pool import StaticPool
 
 from resource_management.db import model
 
+DATA_DIR = os.path.join(os.path.dirname(__file__), 'data')
 HOSTNAMES = [
     'vmx',
     'mx1.lab.office.geant.net',
@@ -86,10 +87,6 @@ def resources_db():
         yield  # wait until caller context ends
 
 
-
-DATA_DIR = os.path.join(os.path.dirname(__file__), 'data')
-
-
 def _load_pyez_json_table(router_name, table_name):
     filename = f'{router_name}-{table_name}.json'
     with open(os.path.join(DATA_DIR, filename)) as f:
@@ -141,6 +138,7 @@ def mocked_router(router_name):
 
                 yield  # stay in this block until caller context exits
 
+
 @pytest.fixture
 def mocked_router_input_tables(router_name):
     # this is the mocked data used as input to pyez
diff --git a/test/test_cli.py b/test/test_cli.py
index 8fbccac7075efcb24f14b1fe6a5e8a785b013a7a..66a52d76225b7f4d3aedca733ef5d6a36bb1853f 100644
--- a/test/test_cli.py
+++ b/test/test_cli.py
@@ -14,4 +14,3 @@ def test_cli_happy_flow(
         '--config', config_filename,
         '--fqdn', router_name])
     assert result.exit_code == 0
-
diff --git a/test/test_db_model.py b/test/test_db_model.py
index 7705b99e3b2145d7058a3a49d50f7303b24de1c2..e9034b94e9088fbdfad16a53e9dfb20ae383b957 100644
--- a/test/test_db_model.py
+++ b/test/test_db_model.py
@@ -53,7 +53,8 @@ def test_save_router_info(resources_db, router_name, mocked_router):
         assert expected_fpc_positions == fpc_positions
 
         for fpc in node.line_cards:
-            expected_ports = {p['name'] for p in fpc_position_dict[fpc.position]}
+            expected_ports = {
+                p['name'] for p in fpc_position_dict[fpc.position]}
             port_names = {p.name for p in fpc.ports}
             assert expected_ports == port_names