[IPython-dev] rubbish null bytes at the end of ipynb file
Gregor Thalhammer
gregor.thalhammer at gmail.com
Mon Jan 20 11:59:31 EST 2014
Dear developers,
sometimes it happens to me that at the very end of my notebook files null bytes (0x00) are appended (I observed between 2 and several hundreds) . The notebook files fail to load ('bad request') the next time. Also nbconvert fails:
...
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/IPython/nbformat/reader.py", line 44, in parse_json
raise NotJSONError(("Notebook does not appear to be JSON: %r" % s)[:77] + "...")
NotJSONError: Notebook does not appear to be JSON: u'{\n "metadata": {\n "name": ""\n },\n...
Luckily such an file can be resurrected by deleting the null bytes.
This only happens sometimes, but with a file containing a lot of inline pylab figures (png) and heavy recreating of figures this happens quite often.
What could I do to localize the root of this problem?
I am using recent ipython from git, with python 2.7 on osx 10.9.
thanks for your help
Gregor
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