[IPython-dev] IPython Parallel KeyError

MinRK benjaminrk@gmail....
Sun Aug 4 17:46:13 CDT 2013


Sounds like a version mismatch - make sure you don't have multiple versions
of IPython installed.  Current IPython will not write a connection file
without the 'key' or 'signature_scheme' keys.


On Sun, Aug 4, 2013 at 9:06 AM, Dave Hirschfeld
<dave.hirschfeld@gmail.com>wrote:

> >
> >
>
> I've updated to the latest IPython and I'm now seeing a KeyError when
> trying
> to instantiate a parallel Client as neither `key` nor `signature_scheme`
> are
> in the `extra_args` dict.
>
> Is this a bug? I'm sure this config has worked previously.
>
>
> In [4]: from IPython.parallel import Client
>         rc = Client(profile='mygrid')
>
> ---------------------------------------------------------------------------
> KeyError                                  Traceback (most recent call last)
> <ipython-input-4-30c5194e693f> in <module>()
>       1 from IPython.parallel import Client
>  ---> 2 rc = Client(profile='mygrid')
>
> c:\dev\code\ipython\IPython\parallel\client\client.pyc in __init__(self,
> url_file, profile, profile_dir, ipython_dir, context, debug, sshserver,
> sshkey, password, paramiko, timeout, cluster_id, **extra_args)
>     463         extra_args['packer'] = cfg['pack']
>     464         extra_args['unpacker'] = cfg['unpack']
>  -> 465         extra_args['key'] = cast_bytes(cfg['key'])
>     466         extra_args['signature_scheme'] = cfg['signature_scheme']
>     467
>
> KeyError: 'key'
>
>
> In [5]: %debug
>
> > c:\dev\code\ipython\ipython\parallel\client\client.py(465)__init__()
>     464         extra_args['unpacker'] = cfg['unpack']
>  -> 465         extra_args['key'] = cast_bytes(cfg['key'])
>     466         extra_args['signature_scheme'] = cfg['signature_scheme']
>
> ipdb> extra_args.keys()
> ['packer', 'unpacker']
> ipdb> exit
>
>
> In [7]: from IPython import sys_info
>         print sys_info()
>
> {'codename': 'An Afternoon Hack',
>  'commit_hash': 'c2cabd0',
>  'commit_source': 'repository',
>  'default_encoding': 'cp1252',
>  'ipython_path': 'c:\\dev\\code\\ipython\\IPython',
>  'ipython_version': '1.0.0-dev',
>  'os_name': 'nt',
>  'platform': 'Windows-2008ServerR2-6.1.7601-SP1',
>  'sys_executable': 'C:\\dev\\bin\\Python27\\python.exe',
>  'sys_platform': 'win32',
>  'sys_version': '2.7.3 (default, Apr 10 2012, 23:24:47) [MSC v.1500 64 bit
> (AMD64)]'}
>
>
> In case it helps the ipcontroller-client.json file is shown below (with
> values blanked out):
>
> {
>   "control": XXXX,
>   "task": XXXX,
>   "notification": XXXX,
>   "exec_key": "XXXX",
>   "task_scheme": "leastload",
>   "mux": XXXX,
>   "iopub": XXXX,
>   "ssh": "",
>   "registration": XXXX,
>   "interface": "XXXX",
>   "pack": "json",
>   "unpack": "json",
>   "location": "XXXX"
> }
>
>
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