style: beautify Python code

pathfinder/server/dijkstra.py

@@ -1,7 +1,7 @@
 from heapdict import heapdict
 
-from pathfinder.server.node import Node
 from pathfinder.motion import motions
+from pathfinder.server.node import Node
 
 
 class Dijkstra:
@@ -50,8 +50,9 @@ def find_path(self, client_connection):
                 if node.key in self._closed_nodes:
                     continue
 
-                new_distance = (current_distance +
-                                current_node.motion_weight(node.came_by_motion))
+                new_distance = current_distance + current_node.motion_weight(
+                    node.came_by_motion
+                )
                 if (
                     node.key not in self._open_nodes
                     or new_distance < self._open_queue[node.key]

pathfinder/server/node.py

@@ -18,8 +18,10 @@ def __init__(self, dijkstra, view, came_by_motion):
     def get_neighbours(self):
         """Yield all neighbours of this node."""
         for motion, view in child_views(
-            self.view, self.dijkstra.available_motions,
-            self.dijkstra.min_line, self.dijkstra.max_line
+            self.view,
+            self.dijkstra.available_motions,
+            self.dijkstra.min_line,
+            self.dijkstra.max_line,
         ):
             yield Node(self.dijkstra, view, motion)
 
@@ -35,9 +37,8 @@ def motion_weight(self, motion):
             # Difference in length of current and future count
             # 2j -> 3j = 0
             # 9j -> 10j = 1
-            return (
-                len(str(self.came_by_motion_repetitions + 1)) -
-                len(str(self.came_by_motion_repetitions))
+            return len(str(self.came_by_motion_repetitions + 1)) - len(
+                str(self.came_by_motion_repetitions)
             )
 
     def set_came_from(self, node):
@@ -60,4 +61,3 @@ def reconstruct_path(self):
             motions.insert(0, node.came_by_motion)
             node = node.came_from
         return motions
-

pathfinder/server/server.py

@@ -83,7 +83,9 @@ def do_action(self, data):
 
     def pathfind(self):
         """Run the pathfinder, then send the result back to the client."""
-        dijkstra = Dijkstra(self.start_view, self.target_view, self.min_line, self.max_line)
+        dijkstra = Dijkstra(
+            self.start_view, self.target_view, self.min_line, self.max_line
+        )
         motions = dijkstra.find_path(self.client_connection)
 
         # If motions is None, that means we cancelled pathfinding because a new