More flake8

Author: munrojm

emmet-builders/emmet/builders/materials/electrodes.py

@@ -63,7 +63,7 @@ def generic_groupby(list_in, comp=operator.eq):
         if ls1 is not None:
             continue
         list_out[i1] = label_num
-        for i2, ls2 in list(enumerate(list_out))[i1 + 1 :]:
+        for i2, ls2 in list(enumerate(list_out))[(i1 + 1):]:
             if comp(list_in[i1], list_in[i2]):
                 if list_out[i2] is None:
                     list_out[i2] = list_out[i1]

emmet-core/emmet/core/structure_group.py

@@ -29,7 +29,7 @@ def generic_groupby(list_in, comp=operator.eq) -> List[int]:
         if ls1 is not None:
             continue
         list_out[i1] = label_num
-        for i2, ls2 in list(enumerate(list_out))[i1 + 1 :]:
+        for i2, ls2 in list(enumerate(list_out))[(i1 + 1):]:
             if comp(list_in[i1], list_in[i2]):
                 if list_out[i2] is None:
                     list_out[i2] = list_out[i1]