memcached installed using nssm no connection could be made to target machine

I am trying to install memcached using nssm using these instructions

1. Stop memcached service if running. Run command prompt as administrator
2. Go to nssm.exe folder -> <path to nssm>\nssm-2.24-103-gdee49fc\nssm-2.24-103-gdee49fc\win64
3. Run nssme.exe remove memcached.
4. Install memcached with the following command: nssm.exe install memcached -m 512
5. Once service is started, open the python command prompt and type the following instructions (assuming you have pymemcache installed.)

    >>> from pymemcache.client import base
    >>> memcache = base.Client(('localhost', 11211)) #selected this port for memcache
    >>> memcache.set('aa', 'bb')
    True
   

but after running the above script it says no connection could be made to the target machine what should I do? i checked services app on windows and memcached was running (Automatic) but not started even when I ran my program.