fix flake, pylint, black

Author: jaypantone

permuta/perm_sets/permset.py

@@ -277,7 +277,7 @@ def _sigma_0_candidates(b1: Perm, b2: Perm) -> Iterator[Perm]:
             yield Perm(result)
 
     @staticmethod
-    def _sigma_1_candidates(b1: Perm, b2: Perm) -> Iterator[Perm]:
+    def _sigma_1_candidates(b1: Perm, b2: Perm) -> Iterator[Perm]:  # pylint: disable=R0914
         """Generate candidates where left and right patterns overlap by one element.
 
         Generates all permutations of length |b1| + |b2| - 1 where the first |b1|
@@ -289,7 +289,7 @@ def _sigma_1_candidates(b1: Perm, b2: Perm) -> Iterator[Perm]:
 
         # The shared position is at index n1 - 1
         # Its value v must satisfy: v = b1[-1] + b2[0]
-        # (it must be at rank b1[-1] among left values and rank b2[0] among right values)
+        # (it must be at rank b1[-1] among left and rank b2[0] among right values)
         v = b1[-1] + b2[0]
 
         # Values less than v: {0, ..., v-1}

tests/perm_sets/test_av.py

@@ -326,7 +326,8 @@ def test_right_juxtaposition_enumeration():
 
 def test_right_juxtaposition_multiple_basis_elements():
     """Test juxtaposition with multiple basis elements."""
-    av_21_12 = Av(Basis(Perm((1, 0)), Perm((0, 1))))  # Only contains empty and singleton
+    # Only contains empty and singleton permutations
+    av_21_12 = Av(Basis(Perm((1, 0)), Perm((0, 1))))
     av_132 = Av(Basis(Perm((0, 2, 1))))
     result = av_21_12.right_juxtaposition(av_132)
     # The result should be a valid Av object with a minimized basis