human
I wrote the below code

    if (not resource):
        raise RuntimeError(u'This    platform    does    not    support    detach.')
    workdir = (os.getcwd() if (workdir is None) else workdir)
    signals.reset(u'SIGCLD')
    maybe_drop_privileges(uid=uid, gid=gid)
    def after_chdir_do():
        (logfile and open(logfile, u'a').close())
        if pidfile:
            _create_pidlock(pidfile).release()
    return DaemonContext(umask=umask, workdir=workdir, fake=fake, after_chdir=after_chdir_do)

What's a good function header?
 ... Here's a good function header?
assistant
#Here's a good function header.

def detached(logfile=None, pidfile=None, uid=None, gid=None, umask=0, workdir=None, fake=False, **opts):