human
Complete this python program:
def instantiateAddCallbacksNoResult(n):
assistant
#Here is the Python code you requested.

    """Creates a deferred and adds a trivial callback/errback/both to it the given
    number of times.
    """
    d = defer.Deferred()
    def f(result):
        return result
    for i in xrange(n):
        d.addCallback(f)
        d.addErrback(f)
        d.addBoth(f)
        d.addCallbacks(f, f)