Draft of proxy pattern realisation

proxypattern

from __future__ import print_function
from collections import namedtuple


agx = namedtuple('art', 'label size')
a = agx('gold', 12)
b = agx('silver', 4)


class MyProxy(object):
	def __new__(cls, agx_obj, *args, **kwargs):
		client = PrintGold if agx_obj.label == 'gold' else PrintSilver
		return object.__new__(client, agx_obj, *args, **kwargs)

	def __init__(self, agx_obj, *args, **kwargs):
		return self.output(agx_obj, *args, **kwargs)

	def output(self, agx_obj, *args, **kwargs):
		print('Main output', agx_obj.label)


class PrintGold(MyProxy):
	def output(self, agx_obj, status, s=None, m=None):
		print('Wow, it\'s gold, the size is', agx_obj.size)
		print(s)


class PrintSilver(MyProxy):
	def output(self, agx_obj, status, s=None, m=None):
		print('Not bad, it\'s not a gold, but the size is', agx_obj.size)
		print(status)


MyProxy(a, 'bajka', s=5)
MyProxy(b, 'manka', m=3)