[IPython-dev] kernel die with : 'module' object has no attribute 'dumps'

Matthias BUSSONNIER bussonniermatthias@gmail....
Sat Feb 23 08:50:41 CST 2013


Do you have a json.py in your --notebook-dir ? or in ~/

because 
> File "json.py", line 11, in <module>
>    data_string = json.dumps(data)

This seem like not part of IPython. 
 (you could try a locate json.py) 
-- 
Matthias

Le 23 févr. 2013 à 14:57, epi a écrit :

> Hi,
> 
> i was using my notebook in the last days (3?) ansi had a repeated "dead kernel" message
> 
> from bash i can see this log :
> 
> 
> mdistefano@epinux:~$ ipython notebook
> [NotebookApp] Using existing profile dir: u'/home/mdistefano/.ipython/profile_default'
> [NotebookApp] Serving notebooks from local directory: /home/mdistefano/dev/ecoop/trunk/python/notebook/
> [NotebookApp] The IPython Notebook is running at: http://128.128.89.215:10000/
> [NotebookApp] Use Control-C to stop this server and shut down all kernels.
> [NotebookApp] Using MathJax from CDN: http://cdn.mathjax.org/mathjax/latest/MathJax.js
> [NotebookApp] Kernel started: c0f6500e-bcaa-4ebc-80e6-79119b44a8a1
> [NotebookApp] Connecting to: tcp://127.0.0.1:34385
> DATA: [{'a': 'A', 'c': 3.0, 'b': (2, 4)}]
> Traceback (most recent call last):
>  File "<string>", line 1, in <module>
>  File "/usr/local/lib/python2.7/dist-packages/IPython/kernel/__init__.py", line 3, in <module>
>    from .connect import *
>  File "/usr/local/lib/python2.7/dist-packages/IPython/kernel/connect.py", line 21, in <module>
>    import json
>  File "json.py", line 11, in <module>
>    data_string = json.dumps(data)
> AttributeError: 'module' object has no attribute 'dumps'
> [NotebookApp] Connecting to: tcp://127.0.0.1:34978
> [NotebookApp] Connecting to: tcp://127.0.0.1:43877
> [NotebookApp] Kernel died: c0f6500e-bcaa-4ebc-80e6-79119b44a8a1
> 
> 
> 
> but from a standard IPython session i can do something like :
> 
> epy@epinux:~$ ipython
> Python 2.7.3 (default, Jan  2 2013, 13:56:14) 
> Type "copyright", "credits" or "license" for more information.
> 
> IPython 1.0.dev -- An enhanced Interactive Python.
> ?         -> Introduction and overview of IPython's features.
> %quickref -> Quick reference.
> help      -> Python's own help system.
> object?   -> Details about 'object', use 'object??' for extra details.
> 
> In [1]: import json
> 
> In [2]: json.dumps('data')
> Out[2]: '"data"'
> 
> 
> Probably something wrong on my environment, but i'm not sure, i'm tying to investigate :/
> 
> thanks for any help,
> 
> 
> --Massimo.
> 
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