In PXLDataAccessor, not clear whether try-except design is on purpose
This code
try:
from pxl.core import *
from pxl.hep import *
from pxl.astro import *
from pxl.healpix import *
Healpix_initialize()
except:
will only import libraries up to the first throw - i.e. if hep is not present, astro will not be imported. This may be fine if PXL must be compiled with core, hep, and astro, but then an according comment may be added.
(from redmine: issue id 1149, created on 2012-08-23)