python-patterns/builder.py at master · wraith4/python-patterns · GitHub

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#!/usr/bin/python

# -*- coding : utf-8 -*-

"""

@author: Diogenes Augusto Fernandes Herminio <diofeher@gmail.com>

https://gist.github.com/420905#file_builder_python.py

"""

# Director

class Director(object):

def __init__(self):

self.builder = None

def construct_building(self):

self.builder.new_building()

self.builder.build_floor()

self.builder.build_size()

def get_building(self):

return self.builder.building

# Abstract Builder

class Builder(object):

def __init__(self):

self.building = None

def new_building(self):

self.building = Building()

# Concrete Builder

class BuilderHouse(Builder):

def build_floor(self):

self.building.floor = 'One'

def build_size(self):

self.building.size = 'Big'

class BuilderFlat(Builder):

def build_floor(self):

self.building.floor = 'More than One'

def build_size(self):

self.building.size = 'Small'

# Product

class Building(object):

def __init__(self):

self.floor = None

self.size = None

def __repr__(self):

return 'Floor: {0.floor} | Size: {0.size}'.format(self)

# Client

if __name__ == "__main__":

director = Director()

director.builder = BuilderHouse()

director.construct_building()

building = director.get_building()

print(building)

director.builder = BuilderFlat()

director.construct_building()

building = director.get_building()

print(building)

### OUTPUT ###

# Floor: One | Size: Big

# Floor: More than One | Size: Small

python-patterns/builder.py at master · wraith4/python-patterns · GitHub

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