1 #!/usr/bin/env python3
  2 class Student(object):
  3     def __init__(self,name,score):
  4         self.name = name
  5         self.score = score
  6     def print_score(self):
  7         print('%s: %s' % (self.name, self.score))
  8     def get_grade(self):
  9         if self.score >= 90:
 10             return 'a'
 11         elif self.score >= 60:
 12             return 'b'
 13         else:
 14             return 'c'
 15 n1 = Student('nemo', 60)
 16 n1.print_score()
 17 print(n1.get_grade())