#!/usr/bin/python26

import sys
import os
import pyxnat


interface = pyxnat.Interface(os.environ['XNAT_URL'].rstrip('/'), 
                             os.environ['XNAT_USER'], 
                             os.environ['XNAT_PASSWORD'])

project = interface.select.project('cs_schizbull08')
assert project.exists()

for subject in project.subjects():
    for experiment in subject.experiments():
        print experiment.label()
        experiment.attrs.set('xnat:mrSessionData/fieldStrength', '1.5T')

sys.exit(0)

# eof
