>>> from pyvas import Client
>>> with Client(hostname, username='username', password='password') as cli:
>>>     r = cli.list_tasks()
>>>     r.ok
True
>>>     r.data
[{u'@id': '...', ...}, {u'@id': '...', ...}]
>>>     r = cli.get_task(task[0]["@id"])
>>>     r.ok
True
>>>     r.data
{u'@id': '...', ...}