diff --git a/pacman/model/graphs/machine/simple_machine_vertex.py b/pacman/model/graphs/machine/simple_machine_vertex.py
index 8958e1fdf..828bdcf2a 100644
--- a/pacman/model/graphs/machine/simple_machine_vertex.py
+++ b/pacman/model/graphs/machine/simple_machine_vertex.py
@@ -36,9 +36,9 @@ class SimpleMachineVertex(MachineVertex):
     __slots__ = ("_iptags", "_reverse_iptags", "_sdram")
 
     def __init__(
-            self, sdram: Optional[AbstractSDRAM], label:Optional[str]=None,
+            self, sdram: Optional[AbstractSDRAM], label: Optional[str] = None,
             app_vertex: Optional[ApplicationVertex] = None,
-            vertex_slice: Optional[Slice]=None,
+            vertex_slice: Optional[Slice] = None,
             iptags: Optional[Iterable[IPtagResource]] = None,
             reverse_iptags: Optional[Iterable[ReverseIPtagResource]] = None):
         super().__init__(
diff --git a/pacman/model/resources/iptag_resource.py b/pacman/model/resources/iptag_resource.py
index 6df3bb58f..f698a8a94 100644
--- a/pacman/model/resources/iptag_resource.py
+++ b/pacman/model/resources/iptag_resource.py
@@ -11,7 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-from typing import Any, List, Optional
+from typing import Any, Optional
 
 
 class IPtagResource(object):
@@ -108,7 +108,7 @@ def __repr__(self) -> str:
             f"strip_sdp={self._strip_sdp}, tag={self._tag}, "
             f"traffic_identifier={self._traffic_identifier})")
 
-    def __eq__(self, other: Any) ->bool:
+    def __eq__(self, other: Any) -> bool:
         """
         For unit tests *only* so __hash__ and __eq__ pairing not done!
         """
diff --git a/pacman/operations/routing_table_generators/merged_routing_table_generator.py b/pacman/operations/routing_table_generators/merged_routing_table_generator.py
index 593a6187d..061caefa6 100644
--- a/pacman/operations/routing_table_generators/merged_routing_table_generator.py
+++ b/pacman/operations/routing_table_generators/merged_routing_table_generator.py
@@ -174,6 +174,7 @@ def __create_routing_table(
 
     return table
 
+
 def __match(
         iterator: _IteratorWithNext[
             Tuple[Tuple[AbstractVertex, str], RoutingEntry]],
@@ -232,4 +233,3 @@ def __merged_keys_and_masks(
     else:
         yield from app_r_info.merge_machine_entries(entries)
 
-