灵活的正则表达式网址Django

url(r\'^(&\\w*)?/?$\', direct_to_template,
    {\'template\': \'basic.djhtml\'}),

def get_absolute_url(self):
    return \"/&%s\" % self.human_redble_url

>>> import re
>>> reg = re.compile(\'^(&\\w*)?/?$\')
>>> result = reg.match(\'&post1\')
>>> result
<_sre.SRE_Match object at 0xb77098a0>
>>> wrong = reg.match(\'aergsr\')
>>> print wrong
None
>>> reg.match(\'post1\')
>>> print reg.match(\'post1\')
None
>>> print reg.match(\'&post1/\')
<_sre.SRE_Match object at 0xb77097a0>
>>> print reg.match(\'&post1:\')
None