[pyngl-talk] Importing PyNIO from a conda install

[Kyle Griffin]

Ray,

If you import a module with a certain name, you must reference its
functions with that name as well. Since 'import Nio' is how the module was
intended to be imported, the instructions are to use that. Since you've
imported PyNIO, you would have to use 'PyNIO.open_file(....)' to use things
from the PyNIO module. Alternatively, you can do 'import PyNIO as Nio' to
create an alias with which you can refer to the module - this would allow
your 'Nio.open_file(...)' statements to work as you've written them.


Kyle

On Tue, Mar 15, 2016 at 7:06 AM Ray Hawthorne <frontogenesis at gmail.com>
wrote:

> Good morning Dave,
>
> Unfortunately, that does not work.
>
> Here’s what I get back when importing Nio:
> >>> import Nio
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File
> "/Users/frontogenesis/anaconda2/lib/python2.7/site-packages/PyNIO/Nio.py",
> line 63, in <module>
>     from nio import *
> ImportError:
> dlopen(/Users/frontogenesis/anaconda2/lib/python2.7/site-packages/PyNIO/nio.so,
> 2): Library not loaded: @rpath/libgssapi_krb5.2.2.dylib
>   Referenced from:
> /Users/frontogenesis/anaconda2/lib/python2.7/site-packages/PyNIO/nio.so
>   Reason: image not found
>
>
> Here’s what I get when importing PyNIO (success), but try to open the file
> (not successful):
> >>> import PyNIO
> >>> f = Nio.open_file("href.t06z.prob.f36.grib2")
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> NameError: name 'Nio' is not defined
>
> -Ray
>
> On Mar 14, 2016, at 11:19 PM, David Brown <dbrown at ucar.edu> wrote:
>
> The standard way to import PyNIO is simply:
>
> import Nio
>
> f = Nio.open_file(<filename>)
>
> Let us know if that doesn't work.
> -dave
>
>
>
>
>
> On Mon, Mar 14, 2016 at 9:10 PM, Ray Hawthorne <frontogenesis at gmail.com>
> wrote:
>
> Greetings,
>
> I just installed PyNIO from anaconda and I’m having some trouble reading
> in a grib2 file.
>
> Using the documentation, when I do an import into my Python script:
> import Nio
>
> The import fails to occur.
>
> I dug around in the anaconda subdirectories and tried:
> import PyNIO
> And that import statement works just fine.
>
> However, when I go to open a grib file:
> f = Nio.open_file("href.t06z.prob.f36.grib2”)
> I end up getting a traceback.
>
> (Similar issue with importing PyNio.Nio as Nio)
>
> I suspect there’s a discrepancy between the documentation and the build of
> PyNIO from anaconda — but I’m somewhere in the advanced beginner stage when
> it comes to Python in general, so I’m not sure how I might be able to fix
> this so that I can open the grib file with pynio.  Would someone be able to
> point me in the right direction?
>
> Thanks,
>
> Ray Hawthorne
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