diff --git a/uncompyle6/bin/uncompile.py b/uncompyle6/bin/uncompile.py
index 6266ecd9..2c21a011 100755
--- a/uncompyle6/bin/uncompile.py
+++ b/uncompyle6/bin/uncompile.py
@@ -74,9 +74,9 @@ def main_bin():
     if not (sys.version_info[0:2] in ((2, 6), (2, 7), (3, 0),
                                       (3, 1), (3, 2), (3, 3),
                                       (3, 4), (3, 5), (3, 6),
-                                      (3, 7), (3, 8)
+                                      (3, 7), (3, 8), (3, 9), (3, 10)
         )):
-        print('Error: %s requires Python 2.6-3.8' % program,
+        print('Error: %s requires Python 2.4-3.10' % program,
               file=sys.stderr)
         sys.exit(-1)
 
diff --git a/uncompyle6/parser.py b/uncompyle6/parser.py
index c35febad..0254e57a 100644
--- a/uncompyle6/parser.py
+++ b/uncompyle6/parser.py
@@ -23,7 +23,6 @@ from __future__ import print_function
 
 import sys
 
-from xdis import iscode, py_str2float
 from spark_parser import GenericASTBuilder, DEFAULT_DEBUG as PARSER_DEFAULT_DEBUG
 from uncompyle6.show import maybe_show_asm
 
diff --git a/uncompyle6/scanner.py b/uncompyle6/scanner.py
index d11adbfa..ba9374a6 100755
--- a/uncompyle6/scanner.py
+++ b/uncompyle6/scanner.py
@@ -28,7 +28,14 @@ import sys
 from uncompyle6.scanners.tok import Token
 from xdis.version_info import IS_PYPY, PYTHON3, version_tuple_to_str
 import xdis
-from xdis import Bytecode, canonic_python_version, code2num, instruction_size, extended_arg_val, next_offset
+from xdis import (
+    Bytecode,
+    canonic_python_version,
+    code2num,
+    instruction_size,
+    extended_arg_val,
+    next_offset,
+)
 
 # The byte code versions we support.
 # Note: these all have to be tuples of 2 ints
@@ -111,7 +118,10 @@ class Scanner(object):
             exec("from xdis.opcodes import %s" % v_str)
             exec("self.opc = %s" % v_str)
         else:
-            raise TypeError("%s is not a Python version I know about" % version_tuple_to_str(version))
+            raise TypeError(
+                "%s is not a Python version I know about"
+                % version_tuple_to_str(version)
+            )
 
         self.opname = self.opc.opname
 
@@ -566,7 +576,10 @@ def get_scanner(version, is_pypy=False, show_asm=None):
                 "scan.Scanner%s(show_asm=show_asm)" % v_str, locals(), globals()
             )
     else:
-        raise RuntimeError("Unsupported Python version %s" % version)
+        raise RuntimeError(
+            "Unsupported Python version, %s, for decompilation"
+            % version_tuple_to_str(version)
+        )
     return scanner