Regex module from Python 3.2 fails

[jiru]

Python’s regex module produces unexpected results which makes warifuri fail. Python 3.5 works fine. The fundamental problem can be showed by this:

$ python
Python 3.5.0 (default, Sep 20 2015, 11:56:03) 
[GCC 5.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import re
>>> print("%4X" % ord('人'))
4EBA
>>> re.findall(r'[^\u4E00-\u9FD5]', '人')
[]
>>> re.findall(r'[\u4E00-\u9FD5]', '人')
['人']

$ python3
Python 3.2.3 (default, Feb 20 2013, 14:44:27) 
[GCC 4.7.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import re
>>> re.findall(r'[^\u4E00-\u9FD5]', '人') # doesn’t work as expected
['人']
>>> re.findall(r'[\u4E00-\u9FD5]', '人') # doesn’t work as expected
[]