Re: PyNIO TypeError?

Steve,

Dave Brown looked into this problem, and there's a simple change you
can make to get things going on your end with Python 2.6.

However, once you make this change, the extended selection capability
will no longer work. For information about what extended selection
is, see:

   http://www.pyngl.ucar.edu/NioExtendedSelection.shtml

If you don't use extended selection, then edit the file:

   /d1/steves/ftp/python/tdi/lib/python2.6/site-packages/PyNIO/Nio.py

and around line 168 change the line:

          super(_Proxy, self).__init__(obj)

to:

          super(_Proxy, self).__init__()

We will look into the extended selection problems later. It looks
like there's a change in Python 2.6 that causes this code to break.

--Mary

On Fri, 9 Jan 2009, Mary Haley wrote:

> Steve,
>
> Thanks for the file. I was able to open it using Python 2.5 and PyNIO
> installed from the file you listed below.
>
> I then built Python 2.6 and numpy 1.2.1 and tried the same PyNIO. I
> got the same error. (I think it was the same, but it was an error
> nonetheless.)
>
> I then built the latest PyNIO from source code using Python 2.6/numpy
> 1.2.1 and had the same problem.
>
> I think there's probably an incompatibility issue, and hopefully
> Dave will be able to look into this.
>
> FYI for Dave and anybody else who is interested. I googled this error
> and found the following:
>
> From the "what's new in python 2.6" page
> http://docs.python.org/dev/whatsnew/2.6.html
>
> object.__init__() previously accepted arbitrary arguments and keyword
> arguments, ignoring them. In Python 2.6, this is no longer allowed and
> will result in a TypeError. This will affect __init__() methods that
> end up calling the corresponding method on object (perhaps through
> using super()). See issue 1683368 for discussion.
>
> You can go to the what's new page and click on "issue 1683368"
> if you want further information.
>
> --Mary
>
>
> On Fri, 9 Jan 2009, Mary Haley wrote:
>
>>
>> Hi Steve,
>>
>> I'm wondering if there's an issue with mixing Python 2.5 and 2.6
>> here (since PyNIO was built with 2.5.x).
>>
>> Can you provide me with the NetCDF file? You can email me offline
>> about this.
>>
>> Thanks,
>>
>> --Mary
>>
>> On Fri, 9 Jan 2009, Steve Sullivan wrote:
>>
>>> Hi,
>>>
>>> I installed the binary PyNIO PyNIO-1.3.0b1.linux-i686-gcc412-2.5.tar.gz
>>> but when I try to use it I get ...
>>>
>>> $ python
>>> Python 2.6 (r26:66714, Dec 2 2008, 12:21:28)
>>> [GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)] on linux2
>>> Type "help", "copyright", "credits" or "license" for more information.
>>>>>> import Nio
>>>>>> ncdf = Nio.open_file( 'testa.nc', mode='r')
>>> Traceback (most recent call last):
>>> File "<stdin>", line 1, in <module>
>>> File
>>> "/d1/steves/ftp/python/tdi/lib/python2.6/site-packages/PyNIO/Nio.py", line
>>> 514, in open_file
>>> file_proxy = _proxy(file, 'str', create_variable=_create_variable)
>>> File
>>> "/d1/steves/ftp/python/tdi/lib/python2.6/site-packages/PyNIO/Nio.py", line
>>> 227, in _proxy
>>> instance = cls(obj)
>>> File
>>> "/d1/steves/ftp/python/tdi/lib/python2.6/site-packages/PyNIO/Nio.py", line
>>> 168, in __init__
>>> super(_Proxy, self).__init__(obj)
>>> TypeError: object.__init__() takes no parameters
>>>>>>
>>>
>>> Do you know how I can fix this?
>>>
>>> Thanks,
>>>
>>> Steve
>>>
>>> --
>>> Steve Sullivan steves_at_ucar.edu 303-497-2823
>>>
>>> FL/2, Research Applications Laboratory
>>> National Center for Atmospheric Research
>>> PO Box 3000
>>> Boulder CO 80307
>>> USA
>>>
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Received on Fri Jan 09 2009 - 15:23:20 MST