Add swappable CSS for HTML previews.

[librarian.git] / librarian / embeds / mathml.py

diff --git a/librarian/embeds/mathml.py b/librarian/embeds/mathml.py
index f99f979..bd58baf 100644 (file)
--- a/librarian/embeds/mathml.py
+++ b/librarian/embeds/mathml.py
@@ -1,10 +1,15 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
 from lxml import etree
+import six
 from librarian import get_resource
-from . import TreeEmbed, create_embed, downgrades_to, converts_to
+from . import TreeEmbed, create_embed, downgrades_to
+
 
 class MathML(TreeEmbed):
     @downgrades_to('application/x-latex')
     def to_latex(self):
         xslt = etree.parse(get_resource('res/embeds/mathml/mathml2latex.xslt'))
         output = self.tree.xslt(xslt)
-        return create_embed('application/x-latex', data=unicode(output))
+        return create_embed('application/x-latex', data=six.text_type(output))