UnicodeEncodeError for international emails.

[emacsway]

Allowed letters in email http://en.wikipedia.org/wiki/Email#Content_encoding

The problems:

#  File ".../python2.6/site-packages/avatar/templatetags/avatar_tags.py", line 36, in avatar_url
#    md5_constructor(user.email).hexdigest(),
#
#UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-3: ordinal not in range(128)

Solution:

return "http://www.gravatar.com/avatar/%s/?%s" % (
-    md5_constructor(user.email).hexdigest(),
+   md5_constructor(user.email.encode("utf-8")).hexdigest(),
     urllib.urlencode(params))