[ncl-install] Nio.open_file problem : object.__init__() takes no parameters

[Mary Haley]

Hi Sourish,

It would be okay to post any PyNGL/PyNIO question to pyngl-talk,  
since there's not a lot of traffic there.

But meanwhile, I'm not sure what's going on here. I think Dave said  
he might know, but he's out today.

Is this file a true NetCDF4 file, or a NetCDF 4 classic file? NCL and  
PyNIO cannot yet read true NetCDF 4 files.

--Mary


On Feb 8, 2010, at 8:11 AM, Sourish Basu wrote:

> Hi All,
>
>     Recently, I installed NCL and PyNIO on Ubuntu 9.10 (x86_64). The
> install went smoothly, but when I try to actually use Nio to read a
> NetCDF4 file, I get the following error:
>
> [13]: fid = Nio.open_file("SampleNetCDF.nc4",'r')
> ---------------------------------------------------------------------- 
> -----
> TypeError                                 Traceback (most recent  
> call last)
>
> /home/i/ResearchCode/Cost function/<ipython console> in <module>()
>
> /usr/local/lib/python2.6/dist-packages/PyNIO/Nio.pyc in
> open_file(filename, mode, options, history, format)
>     513     file = _Nio.open_file 
> (filename,mode,options,history,format)
>     514
> --> 515     file_proxy = _proxy(file, 'str',
> create_variable=_create_variable)
>     516     setattr(file_proxy.__class__,'set_option',set_option)
>     517     file_proxy.file = file
>
> /usr/local/lib/python2.6/dist-packages/PyNIO/Nio.pyc in _proxy(obj,
> *specials, **regulars)
>     226         _known_proxy_classes[key] = cls
>     227     # instantiate and return the needed proxy
>
> --> 228     instance = cls(obj)
>     229     return instance
>     230
>
> /usr/local/lib/python2.6/dist-packages/PyNIO/Nio.pyc in __init__ 
> (self, obj)
>     167
>     168     def __init__(self, obj):
> --> 169         super(_Proxy, self).__init__(obj)
>     170         super(_Proxy,self).__setattr__('_obj', obj)
>     171         super(_Proxy,self).__setattr__('attributes',{})
>
> TypeError: object.__init__() takes no parameters
>
> I'm not sure which mailing list would be appropriate to ask for help,
> but I think this is an installation issue. Has anyone seen this  
> before?
>
> Thanks,
>
> -Sourish
>
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