current_users = ['Niuniu','Ninmei','GURR','LOLO'] new_users = ['GurR','Niu Ke Le','LoLo','Tuo Rui Chi'] number = 0 for x in range(len(new_users)): for y in range(len(current_users)): if new_users[x].lower() == current_users[y].lower(): number = 1 break els...