def save(self, filename=None):
        filename = Path(filename) if filename is not None else self.filename
        with filename.open("w") as f:
            f.write(self.yaml)
def __init__(self):
        self.stdin_path = '/dev/null'
        self.stdout_path = settings.LOG_PATH + '/webapp.log'
        self.stderr_path = settings.LOG_PATH + '/webapp.log'
        self.pidfile_path = settings.PID_PATH + '/webapp.pid'
        self.pidfile_timeout = 5