human
Solve the following python programming problem given the following code:
def _make_cmdline_callback(self, uuid) : 
    def _cmdline_callback(pidfile) : 
        cmdline = ['python', simple_daemon.__file__, ('--uuid=%s' % uuid), ('--pid_file=%s' % pidfile)] 
        return cmdline 
return <MASK> 
    
    Given the code above, what is a proper replacement for <MASK>?
assistant
#Here is a proper replacement for <MASK>.
def _cmdline_callback(