[Python-3000] bytes regular expression?

Thu Aug 9 04:27:19 CEST 2007

Hi,
Since Python 3000 regular expressions are now Unicode by default, how can I 
use bytes regex? Very simplified example of my problem:
 import re
 print( re.sub("(.)", b"[\1円]", b'abc') )
This code fails with exception:
 File "(...)/py3k-struni/Lib/re.py", line 241, in _compile_repl
 p = _cache_repl.get(key)
 TypeError: unhashable type: 'bytes'
Does "frozen bytes type" (immutable) exist to be able to use a cache?
Victor Stinner aka haypo
http://hachoir.org/