tidying

scripts/addons/cam/chunk.py

@@ -64,7 +64,7 @@ def _internalXyDistanceTo(ourpoints,theirpoints,cutoff):
 # for building points - stores points as lists for easy insert /append behaviour
 class camPathChunkBuilder:
     def __init__(self,inpoints=None, startpoints=None, endpoints=None, rotations=None):
-        if inpoints==None:
+        if inpoints is None:
             inpoints=[]
         self.points=inpoints
         self.startpoints=startpoints