Python适配器模式代码实现解析

# -*- coding: utf-8 -*-
# author：baoshan
class Computer:
  def __init__(self, name):
    self.name = name
  def __str__(self):
    return 'the {} computer'.format(self.name)
  def execute(self):
    return 'executes a program'
class Synthesizer:
  def __init__(self, name):
    self.name = name
  def __str__(self):
    return 'the {} synthesizer'.format(self.name)
  def play(self):
    return 'is playing an electronic song'
class Human:
  def __init__(self, name):
    self.name = name
  def __str__(self):
    return '{} the human'.format(self.name)
  def speak(self):
    return 'says hello'
class Adapter:
  def __init__(self, obj, adapted_methods):
    self.obj = obj
    self.__dict__.update(adapted_methods)
def __str__(self):
    return str(self.obj)
def main():
  objects = [Computer('Asus')]
  synth = Synthesizer('moog')
  objects.append(Adapter(synth, dict(execute=synth.play)))
  human = Human('Bob')
  objects.append(Adapter(human, dict(execute=human.speak)))
  for i in objects:
    print('{} {}'.format(str(i), i.execute()))
if __name__ == '__main__':
  main()

the Asus computer executes a program
the moog synthesizer is playing an electronic song
Bob the human says hello

  for i in objects:
    print('{}'.format(i.name))

class Adapter:
  def __init__(self, obj, adapted_methods):
    self.obj = obj
    self.__dict__.update(adapted_methods)
    self.name = obj.name
  def __str__(self):
    return str(self.obj)

def main():
  objects = [Computer('Asus')]
  synth = Synthesizer('moog')
  objects.append(Adapter(synth, dict(execute=synth.play)))
  human = Human('Bob')
  objects.append(Adapter(human, dict(execute=human.speak)))
  for i in objects:
    print('{} {}'.format(str(i), i.execute()))
    print('{}'.format(i.name))
if __name__ == '__main__':
  main()

the Asus computer executes a program
Asus
the moog synthesizer is playing an electronic song
moog
Bob the human says hello
Bob