python 子类调用父类的构造函数实例

class A(object):
  def __init__(self):
    self.nameaa = 'aa'
  def funca(self):
    print('function a %s' % self.nameaa)
    
class B(A):
  def __init__(self):
    self.namebb = 'bb'
　　 def funcb(self):
    print('function b %s' % self.namebb)
    
b = B()
print(b.namebb)
b.funcb()
print(b.nameaa)
b.funca()

class A(object):
  def __init__(self):
    self.nameaa = 'aa'
  def funca(self):
    print('function a %s' % self.nameaa)
    
class B(A):
  def __init__(self):
    self.namebb = 'bb'
    A.__init__(self)    #添加
  def funcb(self):
    print('function b %s' % self.namebb)
    
b = B()
print(b.namebb)
b.funcb()
print(b.nameaa)
b.funca()

class A(object):
  def __init__(self):
    self.nameaa = 'aa'
  def funca(self):
    print('function a %s' % self.nameaa)
    
class B(A):
  def __init__(self):
    self.namebb = 'bb'
    super(B,self).__init__()
  def funcb(self):
    print('function b %s' % self.namebb)
    
b = B()
print(b.namebb)
b.funcb()
print(b.nameaa)
b.funca()

class A(object):
  def __init__(self):
    self.nameaa = 'aa'
  def funca(self):
    print('function a %s' % self.nameaa)
    
class C(A):
  pass
c = C()
c.funca()
print(c.nameaa)

#!/usr/bin/env python3
# -*- coding: UTF-8 -*-
"""
@author: Frank 
@contact: frank.chang@shoufuyou.com
@file: py2topy3.py
@time: 2018/7/7 上午7:09
## python3 代码 
 
"""
 
import threading
import queue
 
_sentinel = object()
 
 
class Consumer(threading.Thread):
  """
  消费者线程类
  """
 
  def __init__(self, name, queue):
    super().__init__(name=name)
    self.queue = queue
 
  def run(self):
    while True:
      values = self.queue.get(timeout=None)
 
      if values is _sentinel:
        self.queue.put(values)
        break
      ##process values
      ##xxx
      print('consume is consuming data {}'.format(values))
 
    print("{} finished".format(self.getName()))
 
 
if __name__ == '__main__':
  q = queue.Queue()
  concumser = Consumer('consumer', q)
 
  print(concumser)

#!/usr/bin/env python3
# -*- coding: UTF-8 -*-
"""
@author: Frank 
@contact: frank.chang@shoufuyou.com
@file: 3.py
@time: 2018/7/7 上午7:05
"""
 
import Queue
import threading
 
# 哨兵
_sentinel = object()
 
 
class Consumer(threading.Thread):
  """
  消费者线程类
  """
 
  def __init__(self, name, queue):
    super(Consumer, self).__init__(name=name)
    self.queue = queue
 
  def run(self):
    while True:
      values = self.queue.get(timeout=None)
 
      if values is _sentinel:
        self.queue.put(values)
        break
      ##process values
      ##xxx
      print('consume is consuming data {}'.format(values))
 
    print("{} finished".format(self.getName()))
 
 
if __name__ == '__main__':
  q = Queue.Queue()
  concumser = Consumer('consumer', q)
  print(concumser)