diff --git a/uncompyle6/scanner.py b/uncompyle6/scanner.py
index 4d04a5e5..bda8d972 100644
--- a/uncompyle6/scanner.py
+++ b/uncompyle6/scanner.py
@@ -22,7 +22,6 @@ scanners, e.g. for Python 2.7 or 3.4.
 """
 
 import sys
-from abc import ABC
 from array import array
 from collections import namedtuple
 
@@ -109,7 +108,7 @@ class Code:
         self._tokens, self._customize = scanner.ingest(co, classname, show_asm=show_asm)
 
 
-class Scanner(ABC):
+class Scanner:
     def __init__(self, version: tuple, show_asm=None, is_pypy=False):
         self.version = version
         self.show_asm = show_asm
diff --git a/uncompyle6/semantics/gencomp.py b/uncompyle6/semantics/gencomp.py
index 7aba2b46..c9406e24 100644
--- a/uncompyle6/semantics/gencomp.py
+++ b/uncompyle6/semantics/gencomp.py
@@ -100,7 +100,7 @@ class ComprehensionMixin:
         self,
         node,
         iter_index,
-        code_index = -5,
+        code_index=-5,
     ):
         p = self.prec
         self.prec = PRECEDENCE["lambda_body"] - 1