# SortPersons Example
# If we add a __lt__ method to a class, then an array
# of objects from this class becomes sortable.
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):
        return f"{self.name};{self.gender};{self.age}"

    # The __repr__ method supplies the "official"
    # representation of objects from the class we
    # are defining.  If this method is not defined, a
    # Person object is represented like this:
    # <person.Person object at 0x000001D5A1EA62B0>
    # For __repr__, we are using the same representation
    # as __str__
    def __repr__(self):
        return str(self)

    # Add < and == operators to the Person class.
    # Adding < makes Person objects sortable.
    def __lt__(self, other):
        return self.age < other.age

    def __eq__(self, other):
        return self.age == other.age