Django - Syntax highlighting with pygments - django

Question

I'm currently working on my blog site. One of the most important thing in appearance is multi language syntax highlighter. So I decided to use Pygments library and I wrote some code:
from django import template
from pygments import highlight
from pygments.formatters.html import HtmlFormatter
from pygments.lexers import get_lexer_by_name, guess_lexer
from django.utils.safestring import mark_safe
from bs4 import BeautifulSoup
register = template.Library()
#register.filter(is_safe=True)
def highlighter(content):
soup = BeautifulSoup(unicode(content))
codeBlocks = soup.findAll(u'code')
for i,block in enumerate(codeBlocks):
if block.has_attr(u'class'):
language = block[u'class']
else:
language = u'text'
try:
lexer = get_lexer_by_name(language[0])
except ValueError:
try:
lexer = guess_lexer(unicode(block))
except ValueError:
lexer = get_lexer_by_name(language[0])
highlighting = highlight(unicode(block), lexer, HtmlFormatter())
block.replaceWith(highlighting)
return mark_safe(unicode(soup))
In my template i use somethink like this:
<p>{{ post.en_post_content|highlighter|safe|linebreaks}}</p>
Highlighting works well but I can't make it safe because this is what I receive:
http://i.gyazo.com/a2557c861e20a826b28cb5c261e6020f.png
I'm also worried about strange characters like "&#39"
I need advices on how to deal with it. Thanks in advance for reply.