<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The code for "getTraceback"<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><a href="http://twistedmatrix.com/trac/browser/tags/releases/twisted-13.1.0/twisted/python/failure.py#L529">http://twistedmatrix.com/trac/browser/tags/releases/twisted-13.1.0/twisted/python/failure.py#L529</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>uses a native version of StringIO<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><a href="http://twistedmatrix.com/trac/browser/tags/releases/twisted-13.1.0/twisted/python/failure.py#L23">http://twistedmatrix.com/trac/browser/tags/releases/twisted-13.1.0/twisted/python/failure.py#L23</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>However, cStringIO:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>"Unlike the <a href="http://docs.python.org/2/library/stringio.html#module-StringIO" title="StringIO: Read and write strings as if they were files."><span class=pre><span style='font-size:10.0pt;font-family:"Courier New";color:blue'>StringIO</span></span></a> module, this module is not able to accept Unicode strings that cannot be encoded as plain ASCII strings."<o:p></o:p></p><p class=MsoNormal><a href="http://docs.python.org/2/library/stringio.html#module-cStringIO">http://docs.python.org/2/library/stringio.html#module-cStringIO</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Above situation triggers an exception when the traceback includes non-ASCII Unicode strings:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>"""<o:p></o:p></p><p class=MsoNormal>'unicode' does not have the buffer interface<o:p></o:p></p><p class=MsoNormal>"""<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have worked around this by implementing my own "getTraceback" that uses standard (non-native) StringIO. Works.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Should I file a bug?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>/Tobias<o:p></o:p></p></div></body></html>