class Person:
    def __init__(self,first_name,last_name,age):
        # instance variable 
        self.first_name = first_name
        self.last_name = last_name
        self.age = age

    def full_name(self):
        return f"{self.first_name} {self.last_name}"

    def is_above_18(self):
        return self.age>18

p1 = Person('raj','gautam',17)

print(p1.first_name)
print(p1.full_name())
print(p1.is_above_18())