Accent encoding error on text

Hello,

I'm trying to use markdown2 with Django but i get errors with special charactes like ãéç inside the text, the error is:

http://i.imgur.com/ZY9WW.png

The text that I'm trying to sabe is that:

aaaaaã
======

aaaa

If I remove the character 'ã' it work properly.. I'm using this to save:

@signals.pre_save(sender=Artigo)
def artigo_pre_save(instance, **kwargs):

    from markdown2 import markdown
    instance.content = markdown(instance.content_markdown)

This decorator comes from Django-Annoying and work well, should I change anything to use special characters?

Thank you.

Start at the markdown() call in the Django pre_save handler and reproduce the issue with the shown input containing ã, é, and ç. Trace whether the failure occurs during Markdown conversion or when the generated content is saved; done means accented text is processed and saved without an encoding error.