`sixtypical` and `dcc6502-adapter` run under Python 3 by default.

bin/sixtypical

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 from os.path import realpath, dirname, join
 import sys

tests/appliances/bin/dcc6502-adapter

@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python3
 
 # script that allows the binary output of sixtypical --output-format=c64-basic-prg --compile to be
 # disassembled by https://github.com/tcarmelveilleux/dcc6502
@@ -8,7 +8,7 @@ import re
 from subprocess import check_output
 from tempfile import NamedTemporaryFile
 
-bytes = sys.stdin.read()
+bytes = sys.stdin.buffer.read()
 
 bytes = bytes[14:]
 
@@ -17,6 +17,8 @@ filename = f.name
 f.write(bytes)
 f.close()
 
-lines = [line for line in check_output("dcc6502 -o 2061 {}".format(filename), shell=True).split('\n') if line and not line.startswith(';')]
+output = check_output("dcc6502 -o 2061 {}".format(filename), shell=True)
+output_lines = output.decode('utf-8').split('\n')
+lines = [line for line in output_lines if line and not line.startswith(';')]
 lines = [re.sub(r'\s*\;.*$', '', line) for line in lines]
 sys.stdout.write('\n'.join(lines))