#----------------------------------
  def register(self, lname="", fname="", amnt="", major="", guard="", pwd=""):
  #--------------------------------------
      if not os.path.isfile('data\id.txt'):
          with open('data\id.txt', 'w') as f_id:
              f_id.write("1")
              id = 1
      else:
          with open('data\id.txt', 'r') as f_id:
              sid = f_id.read()
              id = int(sid) + 1
          with open('data\id.txt', 'w') as f_id:
              f_id.write(str(id))

      # Falls Liste nicht existiert, erstelle leeres Dictionary
      if not os.path.isfile('data\liste.json'):
          with open('data\liste.json', 'w') as json_new:
              json_new.write("{"+"\n"+"}")

      obj = {id: {u"Nachname": lname, u"Vorname": fname, u"Anzahl Begleitpersonen": amnt, u"Studiengang": major, u"Betreuer": guard, u"Passwort": pwd}}

      with open('data\liste.json') as json_r:
          data = json.load(json_r)
      data.update(obj)

      with open('data\liste.json', 'w') as json_w:
          json.dump(data, json_w, indent=4)
      markup_s = "Speichern erfolgreich!"
      return markup_s
  save.exposed = True