adaptor_delegation.py

import os

# Given
class Banner(object):
    def __init__(self, text):
        self.text = text

    def show_with_paren(self):
        print '(%s)' % self.text

    def show_with_aster(self):
        print '*%s*' % self.text

class Print(object):
    def print_weak(self):
        pass

    def print_strong(self):
        pass
        
# Adaptor(delegation)
class PrintBanner(Print):
    def __init__(self, text):
        self.banner = Banner(text)

    def print_weak(self):
        self.banner.show_with_paren()

    def print_strong(self):
        self.banner.show_with_aster()

def main():
    p = PrintBanner("Hello")
    p.print_weak()
    p.print_strong()

if __name__ == '__main__':
    main()