Tidy up the hacks in pywps

[agstephens]

from collections import namedtuple
from pywps import FORMATS, Format

#_FORMATS = namedtuple('FORMATS', 'GEOJSON, JSON, SHP')
#FORMATS = _FORMATS(
#    Format('application/geo+json', extension='.geojson'),
#    Format('application/json', extension='.json'),
#    Format('application/x-zipped-shp', extension='.zip', encoding='base64'),
#)

new_formats = [
    ("DOG", Format('application/json', extension='.dog')),
    ("CAT", Format('application/json', extension='.cat'))
]
_FORMATS_EXT = namedtuple('FORMATS_EXT', _FORMATS._fields + tuple(fmt[0] for fmt in new_formats))
all_formats = [fmt_spec for _, fmt_spec in FORMATS._asdict().items()] + [fmt[1] for fmt in new_formats]

FORMATS_EXT = _FORMATS_EXT(*all_formats)
print(FORMATS_EXT._fields)