Re: [sage-support] Re: Best way to develop Sage packages?

On Monday, April 2, 2012 8:32:18 AM UTC-7, Emil wrote:
>
> Thanks for everyone's help. I decided to make it a package that can be
> installed like:
>
> sage -python setup.py install
>
> My setup.py is as follows (except I changed the name of the package).
> I arrived at its contents by trial and error, so if anyone could have
> a quick look at it to see if there is anything really silly, then that
> would be appreciated! -Emil
>
> --------------------------
> import os
>
> from distutils.core import setup
> from distutils.extension import Extension
> from Cython.Distutils import build_ext
>
> if not os.environ.has_key('SAGE_ROOT'):
>
Using "if not 'SAGE_ROOT' in os.environ" is better. "has_key" has been 
deprecated.
 

>     print "    ERROR: The environment variable SAGE_ROOT must be defined."
>     sys.exit(1)
> else:
>     SAGE_ROOT  = os.environ['SAGE_ROOT']
>     SAGE_LOCAL = SAGE_ROOT + '/local'
>
It's better to use

       SAGE_LOCAL = os.path.join(SAGE_ROOT, 'local')

I don't have comments about any of the rest of it.

-- 
John

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