Codecademy export

script.py

class Student:
  def __init__(self, name, year):
    self.name = name
    self.year = year
    self.grades = []
  
  def add_grade(self, grade):
    if type(grade) is Grade:
      self.grades.append(grade)      
    
class Grade:
  minimum_passing = 65
  
  def __init__(self, score):
    self.score = score
          
  def is_passing(self):
    if self.score >= self.minimum_passing:
      return "Well done!"
    else:
      return "Not a bad thing to fail..."
    
roger = Student("Roger van der Weyden", 10)
sandro = Student("Sandro Botticelli", 12)
pieter = Student("Pieter Bruegel the Elder", 8)
pieter.add_grade(Grade(100))
pieter.add_grade(Grade(50))
pieter.add_grade(Grade(60))

roger_result = Grade(65)
print(roger_result.is_passing())