fixed CircleCI flake8 issues

Author: fa1k3n

ocpp/routing.py

@@ -2,6 +2,7 @@
 
 routables = []
 
+
 def on(action, *, skip_schema_validation=False):
     """ Function decorator to mark function as handler for specific action.
 

tests/test_charge_point.py

@@ -1,7 +1,9 @@
+import pytest
 from ocpp.v20 import ChargePoint as cp
 from ocpp.routing import on, create_route_map
 from ocpp.v16.enums import Action
 
+
 def test_getters_should_not_be_called_during_routemap_setup():
     class ChargePoint(cp):
         @property
@@ -14,6 +16,7 @@ def foo(self):
         assert str(e) == "this will be raised"
         pytest.fail("Getter was called during ChargePoint creation")
 
+
 def test_multiple_classes_with_same_name_for_handler():
     class ChargerA(cp):
         @on(Action.Heartbeat)
@@ -29,4 +32,4 @@ def heartbeat(self, **kwargs):
     B = ChargerB("B", None)
     route_mapA = create_route_map(A)
     route_mapB = create_route_map(B)
-    assert route_mapA["Heartbeat"] != route_mapB["Heartbeat"] 
+    assert route_mapA["Heartbeat"] != route_mapB["Heartbeat"]