Please use the script to know whether the user is active or not.
def IsUserActive(uName):
import os
proObj = os.popen('net user')
activeUsers = proObj.read()
return uName in activeUsers
passUserNameHere='purushothaman'
if IsUserActive(passUserNameHere):
print 'Success: '+passUserNameHere+' is active'
else:
print 'Fail: No User-'+passUserNameHere+' active!'
Sample Output: