[AstroPy] question re specutils

Erik Bray embray at stsci.edu
Wed Sep 17 16:40:08 EDT 2014


On 09/17/2014 11:46 AM, Aycha Tammour wrote:
> Thanks Erik. This makes sense but there is actually a setup_package.py file in
> the directory which I used to install specutils with
>
> python setup_package.py install
>
> Nothing showed on my terminal which seems a bit suspicious.

setup_package.py is not the file you are looking for.

Please follow the instructions at

http://docs.astropy.org/en/stable/install.html#obtaining-the-source-packages

if you want to install from source, or better still just do `pip install specutils`.

Erik

> On Wed, Sep 17, 2014 at 11:18 AM, Erik Bray <embray at stsci.edu
> <mailto:embray at stsci.edu>> wrote:
>
>     On 09/17/2014 11:15 AM, Aycha Tammour wrote:
>     > Hi Erik,
>     >
>     > specutils.__version__
>     > ''
>     >
>     > specutils.__file__
>     > 'specutils/__init__.py'
>     >
>     > The package I am using is the one I grabbed from the github repo just yesterday.
>
>     It sounds like you're just trying to import the package directly out of the
>     repository clone without building the package first or installing it.
>
>     It looks like specutils doesn't have installation instructions as such, but I
>     recommend looking at the installation instructions for Astropy as it applies all
>     the same:
>
>     http://docs.astropy.org/en/stable/install.html
>
>     Erik
>
>     > On Wed, Sep 17, 2014 at 11:10 AM, Erik Bray <embray at stsci.edu <mailto:embray at stsci.edu>
>      > <mailto:embray at stsci.edu <mailto:embray at stsci.edu>>> wrote:
>      >
>      >     On 09/17/2014 10:12 AM, Aycha Tammour wrote:
>      >     > Hi,
>      >     >
>      >     > I have a question about one of Astropy's affiliated packages and I
>     hope someone
>      >     > here can help with it.
>      >     > I am trying to use specutils' extinction module but it seems I am
>     unable to
>      >     > import it.
>      >     >
>      >     > I tried:
>      >     > import specutils
>      >     > specutils.extinction.extinction_ccm89(wave, r_v=3.1)
>      >     > And got:
>      >     > AttributeError: 'module' object has no attribute 'extinction'
>      >     >
>      >     > When I tried:
>      >     > from specutils import extinction
>      >     > I still got
>      >     > ImportError: cannot import name extinction
>      >     >
>      >     > Am I missing something here? I should mention that I was able to
>     use some of the
>      >     > functionality in spectrum1D.
>      >
>      >     When you import specutils what do
>      >
>      >       >>> specutils.__version__
>      >
>      >     and
>      >
>      >       >>> specutils.__file__
>      >
>      >     show?
>      >
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