Regression comm

Regression for !139 (merged)

lbmpy/advanced_streaming/communication.py

 import itertools
 from pystencils import CreateKernelConfig, Field, Assignment, AssignmentCollection
 from pystencils.slicing import shift_slice, get_slice_before_ghost_layer, normalize_slice
-from lbmpy.advanced_streaming.utility import is_inplace, get_accessor, numeric_index, Timestep, get_timesteps, numeric_offsets
+from lbmpy.advanced_streaming.utility import is_inplace, get_accessor, numeric_index,\
+    Timestep, get_timesteps, numeric_offsets
 from pystencils.datahandling import SerialDataHandling
 from pystencils.enums import Target
 from itertools import chain
@@ -229,4 +230,3 @@ def _trim_slice_in_direction(slices, direction):
         result.append(slice(start, stop, s.step))
 
     return tuple(result)
-