get xen domains with python

xen.py

def get_xen_domains():
  p = subprocess.Popen(['xl', 'list', '-l'], stdout=subprocess.PIPE, stderr=subprocess.DEVNULL)
  out, _ = p.communicate(timeout=60)
  out = out.decode('utf-8')
  domains = []
  for domain in json.loads(out):
    domain_name = domain['config']['c_info']['name']
    if not domain_name == 'Domain-0':
      domains.append(domain_name)
  return domains