# Pet Example
# Create a Pet class with with fields
# name, animal_type, and methods
# vaccinate, is_vaccinated.

class Pet:

    # Initialize instance variables.
    def __init__(self, the_name, the_animal_type):
        self.name = the_name
        self.animal_type = the_animal_type
        self._vaccinated = False

    # Return Yes if pet is vaccinated,
    # No, otherwise.
    def is_vaccinated(self):
        if self._vaccinated:
            return "Yes"
        else:
            return "No"

    # Vaccinate pet.
    def vaccinate(self):
        self._vaccinated = True

    # Show pet as a string.
    def __str__(self):
        ret_val = f"Name: {self.name}\n" + \
            f"Animal Type: {self.animal_type}\n" + \
            f"Is Vaccinated: {self.is_vaccinated( )}\n"
        return ret_val