astropy/astropy — pull request #2037 by eteq (2014-02-11 18:11:08+00:00)
Title: ICRS coordinate gives RA -0 when input is 0

This becomes a problem when I convert RA to string and I get "-0", which is not recognized as a valid RA by Cone Search Services.

Python 3.3.2 (default, Oct 25 2013, 11:53:32)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)] on linux
>>> import astropy
>>> astropy.__version__
'0.4.dev7302'
>>> from astropy.coordinates import ICRS
>>> from astropy import units as u
>>> ICRS(0, 0, unit=(u.degree, u.degree))