# Person Example
# Create a person class with instance variables name, 
# gender, age and method have_birthday.

class Person:
    'Represents a person with a name, gender, and age'

    # __init__ method is called whenever a new Person 
    # object is created.
    def __init__(self, the_name, the_gender, the_age):
        self.name = the_name
        self.gender = the_gender
        self.age = the_age

    # Regular method.
    def have_birthday(self):
        self.age += 1

    # Define return value for str method.
    def __str__(self):
        output = f"{self.name};{self.gender};{self.age}"
        return output