from datetime import datetime
class Student:

    def __init__(self, name, birth_year):
        self.name = name
        self.birth_year = birth_year
    def get_age(self):
        now = datetime.now()
        current_year = now.year
        return current_year - self.birth_year
    def __str__(self):
        return "{0} - {1}".format(self.name, self.get_age())


stud1 = Student('John', 1995)
stud2 = Student('Tom', 1997)

print(stud1)
print(stud2)
print(stud1.get_age())
print(stud2.get_age())