UnicodeError: source returned bytes, but no encoding specified

[Fabian.Scheler@…]

The stack trace looks like this:

File "/usr/local/lib/python2.7/dist-packages/trac/web/main.py", line 562, in _dispatch_request
  dispatcher.dispatch(req)
File "/usr/local/lib/python2.7/dist-packages/trac/web/main.py", line 269, in dispatch
  iterable=chrome.use_chunked_encoding)
File "/usr/local/lib/python2.7/dist-packages/trac/web/chrome.py", line 1079, in render_template
  stream |= self._filter_stream(req, method, filename, stream, data)
File "/usr/local/lib/python2.7/dist-packages/genshi/core.py", line 133, in __or__
  return Stream(_ensure(function(self)), serializer=self.serializer)
File "/usr/local/lib/python2.7/dist-packages/trac/web/chrome.py", line 1331, in inner
  data)
File "build/bdist.linux-x86_64/egg/ticketbudgeting/ticketbudgeting.py", line 327, in filter_stream
  stream |= Transformer('.//fieldset [@id="properties"]').after(HTML(fieldset))
File "/usr/local/lib/python2.7/dist-packages/genshi/input.py", line 442, in HTML
  return Stream(list(HTMLParser(BytesIO(text), encoding=encoding)))
File "/usr/local/lib/python2.7/dist-packages/genshi/core.py", line 273, in _ensure
  event = stream.next()
File "/usr/local/lib/python2.7/dist-packages/genshi/input.py", line 449, in _coalesce
  for kind, data, pos in chain(stream, [(None, None, None)]):
File "/usr/local/lib/python2.7/dist-packages/genshi/input.py", line 337, in _generate
  raise UnicodeError("source returned bytes, but no encoding specified")

This error should be caused by a missing adaptation for Genshi 0.7, the attached patch should solve the problem.

[mwg@…]

was bitten by this bug as well, and the attached patch helped. would like to see it integrated into Budgeting Plugin trunk

[Jun Omae]

I don't think the patch fixes it. The patch would just change fieldset variable to u'fieldset' literal. It breaks the plugin features.

-                stream |= Transformer('.//fieldset [@id="properties"]').after(HTML(fieldset))
+                stream |= Transformer('.//fieldset [@id="properties"]').after(HTML(u"""fieldset"""))

I'll post a patch later.

[Fabian.Scheler@…]

Well, I am neither an experienced python coder nor have I used Genshi so far. I simply tried to silence the error above. So, presumable you are right - nevertheless, I would really be interested in a fix; it would be great if you could post a patch. Thanks!

[Kirk]

Index: ticketbudgeting/ticketbudgeting.py
===================================================================
--- ticketbudgeting/ticketbudgeting.py	(revision 16144)
+++ ticketbudgeting/ticketbudgeting.py	(working copy)
@@ -359,7 +351,7 @@
             if 'by' in req.args:
                 by = req.args['by']
             budget_stats, stats_by = self._get_milestone_html(req, by)
-            stats_by = "<fieldset><legend>Budget</legend><table>%s</table></fieldset>" % stats_by
+            stats_by = u"""<fieldset><legend>Budget</legend><table>%s</table></fieldset>""" % stats_by
             stream |= Transformer('//form[@id="stats"]').append(HTML(stats_by))
             stream |= Transformer('//div[@class="info"]').append(HTML(budget_stats))
         return stream

[Ryan J Ollos]

In 16146:

0.6.6dev: Fix UnicodeError with Genshi 0.7

Patch by linefeed. Fixes #12886.

[Ryan J Ollos]

Feel free to push a better fix, but this at least fixes the acute problem.