fix variable names

src/pystencils/gpu/periodicity.py

@@ -20,15 +20,15 @@ def create_copy_kernel(
     field = Field.create_generic(
         "field", len(domain_size), index_dimensions=index_dimensions, dtype=dtype
     )
-    normalized_from_slice = normalize_slice(src_slice, field.spatial_shape)
-    normalized_to_slice = normalize_slice(dst_slice, field.spatial_shape)
+    normalized_src_slice = normalize_slice(src_slice, field.spatial_shape)
+    normalized_dst_slice = normalize_slice(dst_slice, field.spatial_shape)
 
     offset = [
         s1.start - s2.start
-        for s1, s2 in zip(normalized_from_slice, normalized_to_slice)
+        for s1, s2 in zip(normalized_src_slice, normalized_dst_slice)
     ]
     assert offset == [
-        s1.stop - s2.stop for s1, s2 in zip(normalized_from_slice, normalized_to_slice)
+        s1.stop - s2.stop for s1, s2 in zip(normalized_src_slice, normalized_dst_slice)
     ], "Slices have to have same size"
 
     update_eqs = []