Adds to Melange a tags framework based on taggable-mixin.
The taggable-mixin allowed only tag per Datastore model. This is extended
framework allows any arbitrary number of tags per Datastore model. Also,
now one can define different models for different Tag types which are all
inherited from the base Tag model provided by taggable-mixin.
The GHOPTask model makes use of 2 tags per model, one for difficulty and the
other for task_type, both using the tags framework.
Reviewed by: Paweł Sołyga
r"""
Using simplejson from the shell to validate and
pretty-print::
$ echo '{"json":"obj"}' | python -msimplejson
{
"json": "obj"
}
$ echo '{ 1.2:3.4}' | python -msimplejson
Expecting property name: line 1 column 2 (char 2)
Note that the JSON produced by this module's default settings
is a subset of YAML, so it may be used as a serializer for that as well.
"""
import django.utils.simplejson
#
# Pretty printer:
# curl http://mochikit.com/examples/ajax_tables/domains.json | python -msimplejson.tool
#
def main():
import sys
if len(sys.argv) == 1:
infile = sys.stdin
outfile = sys.stdout
elif len(sys.argv) == 2:
infile = open(sys.argv[1], 'rb')
outfile = sys.stdout
elif len(sys.argv) == 3:
infile = open(sys.argv[1], 'rb')
outfile = open(sys.argv[2], 'wb')
else:
raise SystemExit("%s [infile [outfile]]" % (sys.argv[0],))
try:
obj = simplejson.load(infile)
except ValueError, e:
raise SystemExit(e)
simplejson.dump(obj, outfile, sort_keys=True, indent=4)
outfile.write('\n')
if __name__ == '__main__':
main()