to satisfy the flake8 linter

lbmpy/advanced_streaming/communication.py

@@ -51,7 +51,8 @@ def _fix_length_one_slices(slices):
         return tuple(_fix_length_one_slices(s) for s in slices)
 
 
-def get_communication_slices(stencil, comm_stencil=None, streaming_pattern='pull', after_timestep='both', ghost_layers=1):
+def get_communication_slices(
+        stencil, comm_stencil=None, streaming_pattern='pull', after_timestep='both', ghost_layers=1):
     """
     Return the source and destination slices for periodicity handling or communication between blocks.
 

lbmpy/advanced_streaming/utility.py

@@ -39,12 +39,14 @@ def get_accessor(streaming_pattern, timestep) -> PdfFieldAccessor:
     else:
         return odd_accessors[streaming_pattern]
 
+
 def is_inplace(streaming_pattern):
     if streaming_pattern not in streaming_patterns:
         raise ValueError('Invalid streaming pattern', streaming_pattern)
 
     return streaming_pattern in ['aa', 'esotwist']
 
+
 def numeric_offsets(field_access: ps.Field.Access):
     return tuple(int(o) for o in field_access.offsets)