import sys
sys.path.insert(1,"/opt/roundup084/lib/python2.4/site-packages")
from roundup import instance

tracker = instance.open('/opt/roundup084/trackers/schooltool')
db = tracker.open('admin')

listPrio = set()
for issueId in db.issue.list():
    roundupIssue = db.getnode('issue', str(issueId))
    roundupPriorityId = roundupIssue.get('status')
    if roundupPriorityId is not None:
        roundupPriority = db.getnode('status', roundupPriorityId)
        listPrio.add(roundupPriority.get('name'))
print listPrio