class Student(object):
def __init__(self, name, score):
self.name = name
self.score = score
def get_grade(self):
if self.score >= 90:
return 'A'
elif self.score >= 60:
return 'B'
else:
return 'C'
lisa = Student('Lisa', 99)
bart = Student('Bart', 59)
print(lisa.name, lisa.get_grade())
print(bart.name, bart.get_grade())
# your code goes here
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