Python Class Inheritance Examples

#-------------------------------------------------------------------------------
# Name:        ClassAndInheritance.py
# Purpose:     Study class inheritance
#
# Notes:
#
# References:  http://www.jesshamrick.com/2011/05/18/an-introduction-to-classes-and-inheritance-in-python/
#
# Author:      User
#
# Created:     04/06/2014
# Copyright:   (c) User 2014
# Licence:     <your licence>
#-------------------------------------------------------------------------------
    # Imports #
import locale
from datetime import datetime

# Configurations #
locale.setlocale(locale.LC_ALL, '') # Set the locale for your system 'en_US.UTF-8'


    # Main #
def main():
        # Variables
            # Global

            # Local

        # Main Code
    o_PetPolly = c_Pet("Polly", "Parrot") ## Calls main class to create this instance
    o_PetGinger = sc_Cat("Ginger", "True") ## Calls 'Cat" subclass with name and 'hates dogs' disposition
    o_PetClifford = sc_Dog("Clifford", "True") ## Calls 'Dog" subclass with name and 'chases cats' disposition

    print("Going to about a main class created instance")
    print(o_PetPolly)
    print("Typical way to call a method, 'o_PetPolly.getName()': %s") %(o_PetPolly.getName())
    print("Less typical way to call a method, 'Pet.getName(o_PetPolly)': %s") %(c_Pet.getName(o_PetPolly))
    print("Done.")
    print("")

    print("More about main class created instance") %()
    print("Obj name: %s") %(o_PetPolly.getName())
    print("Obj species: %s") %(o_PetPolly.getSpecies())
    print(o_PetPolly)
    print("")
    print("About this subclass created instance") %()
    print("Obj name: %s") %(o_PetGinger.getName())
    print("Obj species: %s") %(o_PetGinger.getSpecies())
    print("Obj hates dogs?: %s") %(o_PetGinger.hatesDogs())
    print(o_PetGinger)
    print("")
    print("And about this subclass created instance") %()
    print("Obj name: %s") %(o_PetClifford.getName())
    print("Obj species: %s") %(o_PetClifford.getSpecies())
    print("Obj chase cats?: %s") %(o_PetClifford.chasesCats())
    print(o_PetClifford)
    print("")

    print("Instance checks showing class and inheritance")
    mister_pet = c_Pet("Mister", "Dog")
    mister_dog = sc_Dog("Mister", True)
    print("Is mister_pet an instance of c_Pet?: %s") %(isinstance(mister_pet, c_Pet))
    print("Is mister_pet an instance of sc_Dog?: %s") %(isinstance(mister_pet, sc_Dog)) ## Not part of 'dog' as created via main class
    print("Is mister_dog an instance of c_Pet?: %s") %(isinstance(mister_dog, c_Pet)) ## Yes as came in via subclass 'dog'
    print("Is mister_dog an instance of sc_Dog?: %s") %(isinstance(mister_dog, sc_Dog))## Yes as came in via subclass 'dog'
    print("")

    print("Some pet instance facts.")
    o_Fido = sc_Dog("Fido", True) ## (name, chase cats?)
    o_Rover = sc_Dog("Rover", False) ## (name, chase cats?)
    o_Mittens = sc_Cat("Mittens", True) ## (name, hates dogs?)
    o_Fluffy = sc_Cat("Fluffy", False) ## (name, hates dogs?)
    print("I am: %s") %(o_Fido)
    print("I am: %s") %(o_Rover)
    print("I am: %s") %(o_Mittens)
    print("I am: %s") %(o_Fluffy)
    print("")
    print "%s chases cats: %s" %(o_Fido.getName(), o_Fido.chasesCats())
    print "%s chases cats: %s" %(o_Rover.getName(), o_Rover.chasesCats())
    print "%s hates dogs: %s" % (o_Mittens.getName(), o_Mittens.hatesDogs())
    print "%s hates dogs: %s" % (o_Fluffy.getName(), o_Fluffy.hatesDogs())



        # Tests
            # Output to file
    ## v_Path = 'C:/Users/User/Documents/out.txt'
    ## v_Mode = 'w'
    ## v_FileConn = f_OutputToFileOut(v_Path, v_Mode)

    ## sys.exit("Error message") ## Stop execution

#------------------------------

    # Functions #
        # Normal Functions

        # Generator Functions

        # Lambda Functions

    # Classes #
class c_Pet(object):
    def __init__(self, name, species):
        self.name = name
        self.species = species
    def getName(self):
        return self.name
    def getSpecies(self):
        return self.species
    def __str__(self):
        return "%s is a %s" % (self.name, self.species)

class sc_Dog(c_Pet): ## Subclass of c_Pet
    def __init__(self, name, chases_cats):
        c_Pet.__init__(self, name, "Dog")
        self.chases_cats = chases_cats
    def chasesCats(self):
        return self.chases_cats

class sc_Cat(c_Pet): ## Subclass of c_Pet
    def __init__(self, name, hates_dogs):
        c_Pet.__init__(self, name, "Cat")
        self.hates_dogs = hates_dogs
    def hatesDogs(self):
        return self.hates_dogs




    # Main Loop #
if __name__ == '__main__':
    main()