human
I wrote the below code

    @decorators.runs_once
    def mytask():
        print 'yolo'
    with settings(hide('everything'), parallel=True):
        execute(mytask, hosts=['localhost', '127.0.0.1'])
    result = sys.stdout.getvalue()
    eq_(result, 'yolo\n')
    assert (result != 'yolo\nyolo\n')

What's a good function header?

Give me a Python code to print 'yolo'?
assistant
#Here is Python code to print 'yolo'
.

@mock_streams('stdout')
def test_global_parallel_honors_runs_once():