python-patterns/prototype/prototype.py at main · web-user/python-patterns

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# Prototypical - a style in which there is no concept of a class,

# and inheritance is performed by cloning an existing instance of an object - a prototype

import copy

class Address:

def __init__(self, street_address, city, country):

self.street_address = street_address

self.city = city

self.country = country

def __str__(self):

return f'{self.street_address}, {self.city}, {self.country}'

class Person:

def __init__(self, name, address):

self.name = name

self.address = address

def __str__(self):

return f'{self.name} lives at {self.address}'

john = Person("John", Address("123 London Road", "London", "UK"))

print(john)

# jane = john

jane = copy.deepcopy(john)

jane.name = "Jane"

jane.address.street_address = "124 London Road"

print(john, '\n', jane)

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