Here is final working code
user_list = []
for us in c.Win32_LogonSession():
try:
for user in us.references("Win32_LoggedOnUser"):
#print(user.Antecedent.Domain, user.Antecedent.Name, sep="\\")
user_logins = user.Antecedent.Domain + "\\" + user.Antecedent.Name
user_list.append(user_logins)
except:
pass
userID = user_list[0]
print(userID)