python question :

Write a class Student() such that it has an attribute 'score' (that is initialized with 10) and three methods:

add_score(): adds 10 to the score

decrease_score(): decreases score by 10

__str__(): returns the current score (should return a string)

Example:

p = Student()

print(p) 10

p.add_score()

print(p) 20

p.decrease_score()

print(p) 10