class Student:
  
  def __init__(self, s_id, name, grade):
    self.s_id = s_id
    self.name = name
    self.grade = grade
    
  def __str__(self):
    return "Die / Der Studierende " \
      + str(self.name) \
      + " (" + str(self.s_id) \
      + ") hat die Note " \
      + str(self.grade) \
      + " erhalten."
      
students = {}

while True:
  user_input = input("Weitere Daten eingeben? [J/N]")
  if user_input == "J":
    tmp_id = int(input("  ID: "))
    tmp_name = input("  Name: ")
    tmp_grade = float(input("  Note: "))
    tmp_student = Student(tmp_id, tmp_name, tmp_grade)
    students[tmp_id] = tmp_student
  elif user_input == "N":
    print("Programm beendet.")
    break
  else:
    print("Ungültige Eingabe.")

for id in students:
    print(students[id])