human
I wrote the below code

    if ('GUNICORN_FD' not in os.environ):
        if os.fork():
            os._exit(0)
        os.setsid()
        if os.fork():
            os._exit(0)
        os.umask(18)
        if (not enable_stdio_inheritance):
            closerange(0, 3)
            fd_null = os.open(REDIRECT_TO, os.O_RDWR)
            if (fd_null != 0):
                os.dup2(fd_null, 0)
            os.dup2(fd_null, 1)
            os.dup2(fd_null, 2)
        else:
            fd_null = os.open(REDIRECT_TO, os.O_RDWR)
            if (fd_null != 0):
                os.close(0)
                os.dup2(fd_null, 0)
            def redirect(stream, fd_expect):
                try:
                    fd = stream.fileno()
                    if ((fd == fd_expect) and stream.isatty()):
                        os.close(fd)
                        os.dup2(fd_null, fd)
                except AttributeError:
                    pass
            redirect(sys.stdout, 1)
            redirect(sys.stderr, 2)

What's a good function header?

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

def daemonize(enable_stdio_inheritance=False):