Fix linting

paicos/image_creators/image_creator_actions.py

@@ -28,6 +28,15 @@ def find_zoom_sub_divisions(zoom, zoom_max):
 
 
 class Actions:
+    """
+    The purpose of this class is to simplify the steps
+    that are usually involved in creating animations
+    and/or interactive widgets.
+
+    This is very much work in progress and subject
+    to change. Send Thomas an email if you would like
+    a working example.
+    """
     def __init__(self, snapnum=None, image_creator=None, dry_run=True):
 
         self.dry_run = dry_run

paicos/trees/bvh_gpu.py

@@ -413,7 +413,7 @@ def __init__(self, positions, sizes, threadsperblock=32):
         self._pos_uint = self._pos_uint[self.sort_index, :]
 
         del self._pos_uint
-        
+
         # Allocate arrays
         self.children = -1 * cp.ones((self.num_internal_nodes, 2), dtype=int)
         self.parents = -1 * cp.ones(self.num_leafs_and_nodes, dtype=int)